Server-side Issue about blazorgooglemaps

[Redeye51]

I added you Nuget package got it to compile but when I ran it I get the following error

[valentasm1]

@Karluzo this is not mine. This is @rungwiroon . I will delete it aslo from repository

[valentasm1]

@Karluzo Lets clarify scenarios which isnt working for you.

1. Create server side Blazor project. Then create component in shared folder using BlazorGoogleMaps and using it in in razor pages you get error. I will investigate this scenario
2. What do you mean normal pages project? Could you write down steps how we could try reproduce it?

[Cameron097]

Ive been having this issue and I fixed it by changing the Rendermode to Server in the host file. If it is set to ServerPrerendered it will not work (was getting exactly the same object reference error as shown above). Hope this helps :)

[valentasm1]

@Cameron097 yes i will add. This week was pretty busy. Hope next week will have more time and will udpdate docs

[valentasm1]

There is issue with embedding local JavaScript to server side applications. Will update soon

[Redeye51]

Thanks for the response

[Redeye51]

I saw there was a fork created to attempt a fix for this. Any luck?

[valentasm1]

I am fallowing procedure to wait for confirmation of valid code. Made pull request. As short workaround you could try add this nuget Vlasdkoqw. I was testing if my fix helped with this nuget. Just add later will need just to replace nuget after our release. I could update here when we release update.

[Redeye51]

Here's the page code.

@page "/maptest"
@using GoogleMapsComponents.Maps
@using Vlasdkoqw

Google Map

<GoogleMap @ref:suppressField @ref="@map1" Id="map1" Options="@mapOptions">

@functions {
private GoogleMap map1;
private MapOptions mapOptions;

protected override void OnInitialized()
{
    mapOptions = new MapOptions()
    {
        Zoom = 13,
        Center = new LatLngLiteral()
        {
            Lat = 13.505892,
            Lng = 100.8162
        },
        MapTypeId = MapTypeId.Roadmap
    };
}

}

[valentasm1]

I updated readme a bit. Did you added script tag to _Host.cshtml also google script tag (with your key of course)? Do you use preview8?

<script src="_content/Vlasdkoqw/objectManager.js"></script>
<script type="text/javascript" src="https://maps.googleapis.com/maps/api/js?key=YOUR_KEY&v=3"></script>

[Redeye51]

I had the google api URL but I didn't have the objectManager.js in the _Host.cshtml file. I added that and tried it again. Same result.

I also have services.AddBlazorGoogleMaps(); in my Startup.cs

[valentasm1]

From small stack trace part i see that error comes not from component itself. Could you try create new solution and fallow steps i provided. In your case I think it could be some conflicts in preview libraries. Please check github.com/dotnet/aspnetcore/issues/13133 and maybe it could help to solve issue.

[valentasm1]

Does issue still exist in preview 9.
Temporally i update lib to other package while i get access to update this lib packages
https://www.nuget.org/packages/Vlasdkoqw/1.0.2

Please fallow migration instructions and let me know
https://devblogs.microsoft.com/aspnet/asp-net-core-and-blazor-updates-in-net-core-3-0-preview-9/

[Redeye51]

I've been working on other tasks but I will try it again today and let you know. Thanks!

…

On Wed, Sep 11, 2019, 1:10 AM Valentas ***@***.***> wrote: Does issue still exist in preview 9. Temporally i update lib to other package while i get access to update this lib packages https://www.nuget.org/packages/Vlasdkoqw/1.0.2 Please fallow migration instructions and let me know https://devblogs.microsoft.com/aspnet/asp-net-core-and-blazor-updates-in-net-core-3-0-preview-9/ — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#7?email_source=notifications&email_token=AAIQKW4VDHSQBFIKHQV7F53QJCRXBA5CNFSM4IOZ5SWKYY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOD6NU5AI#issuecomment-530271873>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AAIQKWYSI6NPCU25IERYQ6DQJCRXBANCNFSM4IOZ5SWA> .

[Redeye51]

I created a new server-side project and added your component. I still received an error. [image: screenshot.png]

…

On Wed, Sep 11, 2019 at 8:18 AM Bryan Poteet ***@***.***> wrote: I've been working on other tasks but I will try it again today and let you know. Thanks! On Wed, Sep 11, 2019, 1:10 AM Valentas ***@***.***> wrote: > Does issue still exist in preview 9. > Temporally i update lib to other package while i get access to update > this lib packages > https://www.nuget.org/packages/Vlasdkoqw/1.0.2 > > Please fallow migration instructions and let me know > > https://devblogs.microsoft.com/aspnet/asp-net-core-and-blazor-updates-in-net-core-3-0-preview-9/ > > — > You are receiving this because you authored the thread. > Reply to this email directly, view it on GitHub > <#7?email_source=notifications&email_token=AAIQKW4VDHSQBFIKHQV7F53QJCRXBA5CNFSM4IOZ5SWKYY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOD6NU5AI#issuecomment-530271873>, > or mute the thread > <https://github.com/notifications/unsubscribe-auth/AAIQKWYSI6NPCU25IERYQ6DQJCRXBANCNFSM4IOZ5SWA> > . >

[valentasm1]

I dont see screen shot. Could you copy past stack trace?

[Redeye51]

An unhandled exception occurred while processing the request. NullReferenceException: Object reference not set to an instance of an object. GoogleMapsComponents.MapComponent.Dispose() - NullReferenceException: Object reference not set to an instance of an object. - GoogleMapsComponents.MapComponent.Dispose() - Microsoft.AspNetCore.Components.Rendering.ComponentState.Dispose() - Microsoft.AspNetCore.Components.RenderTree.Renderer.Dispose(bool disposing) - Microsoft.AspNetCore.Components.Rendering.HtmlRenderer.HandleException(Exception exception) - Microsoft.AspNetCore.Components.RenderTree.Renderer.Dispose(bool disposing) - Microsoft.AspNetCore.Components.RenderTree.Renderer.Dispose() - Microsoft.AspNetCore.Mvc.ViewFeatures.RazorComponents.StaticComponentRenderer.PrerenderComponentAsync(ParameterView parameters, HttpContext httpContext, Type componentType) - Microsoft.AspNetCore.Mvc.Rendering.HtmlHelperComponentExtensions.PrerenderedServerComponentAsync(HttpContext context, ServerComponentInvocationSequence invocationId, Type type, ParameterView parametersCollection) - Microsoft.AspNetCore.Mvc.Rendering.HtmlHelperComponentExtensions.RenderComponentAsync<TComponent>(IHtmlHelper htmlHelper, RenderMode renderMode, object parameters) - RamosOil.Intranet.Pages.Pages__Host.<ExecuteAsync>b__10_1() in _Host.cshtml+ 1. @(await Html.RenderComponentAsync<App>(RenderMode.ServerPrerendered)) - Microsoft.AspNetCore.Razor.Runtime.TagHelpers.TagHelperExecutionContext.SetOutputContentAsync() - RamosOil.Intranet.Pages.Pages__Host.ExecuteAsync() - Microsoft.AspNetCore.Mvc.Razor.RazorView.RenderPageCoreAsync(IRazorPage page, ViewContext context) - Microsoft.AspNetCore.Mvc.Razor.RazorView.RenderPageAsync(IRazorPage page, ViewContext context, bool invokeViewStarts) - Microsoft.AspNetCore.Mvc.Razor.RazorView.RenderAsync(ViewContext context) - Microsoft.AspNetCore.Mvc.ViewFeatures.ViewExecutor.ExecuteAsync(ViewContext viewContext, string contentType, Nullable<int> statusCode) - Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeNextResultFilterAsync>g__Awaited|29_0<TFilter, TFilterAsync>(ResourceInvoker invoker, Task lastTask, State next, Scope scope, object state, bool isCompleted) - Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.Rethrow(ResultExecutedContextSealed context) - Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.ResultNext<TFilter, TFilterAsync>(ref State next, ref Scope scope, ref object state, ref bool isCompleted) - Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.InvokeResultFilters() - Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeNextResourceFilter>g__Awaited|24_0(ResourceInvoker invoker, Task lastTask, State next, Scope scope, object state, bool isCompleted) - Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.Rethrow(ResourceExecutedContextSealed context) - Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.Next(ref State next, ref Scope scope, ref object state, ref bool isCompleted) - Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.InvokeFilterPipelineAsync() - Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeAsync>g__Logged|17_1(ResourceInvoker invoker) - Microsoft.AspNetCore.Routing.EndpointMiddleware.<Invoke>g__AwaitRequestTask|6_0(Endpoint endpoint, Task requestTask, ILogger logger) - Microsoft.AspNetCore.Authorization.AuthorizationMiddleware.Invoke(HttpContext context) - Microsoft.AspNetCore.Authentication.AuthenticationMiddleware.Invoke(HttpContext context) - Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore.MigrationsEndPointMiddleware.Invoke(HttpContext context) - Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore.DatabaseErrorPageMiddleware.Invoke(HttpContext httpContext) - Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore.DatabaseErrorPageMiddleware.Invoke(HttpContext httpContext) - Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware.Invoke(HttpContext context)

…

On Thu, Sep 12, 2019 at 10:37 AM Valentas ***@***.***> wrote: I dont see screen shot. Could you copy past stack trace? — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#7?email_source=notifications&email_token=AAIQKW4TVVXVYC556ERKAHLQJJ45XA5CNFSM4IOZ5SWKYY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOD6SVKRI#issuecomment-530928965>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AAIQKW3ELT3PBDH3E7Z2XADQJJ45XANCNFSM4IOZ5SWA> .

[valentasm1]

I tried to recreate scenario to get exception. I go very similar result when i dont put script tags into _Host.cshtml
Could you confirm that these lines exist in _Host.cshtml file?
Ps please change YOUR_KEY with your google key

<script type="text/javascript" src="https://maps.googleapis.com/maps/api/js?key=YOUR_KEY&v=3"></script>
<script src="_content/Vlasdkoqw/objectManager.js"></script>

[Redeye51]

Yes I can confirm. Here's the contents of the _Host.cshtml file @page "/" @namespace MapTester.Pages @addTagHelper *, Microsoft.AspNetCore.Mvc.TagHelpers <!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8" /> <meta name="viewport" content="width=device-width, initial-scale=1.0" /> <title>MapTester</title> <base href="~/" /> <link rel="stylesheet" href="css/bootstrap/bootstrap.min.css" /> <link href="css/site.css" rel="stylesheet" /> </head> <body> <app> @(await Html.RenderComponentAsync<App>(RenderMode.ServerPrerendered)) </app> <script src="_framework/blazor.server.js"></script> <script type="text/javascript" src=" https://maps.googleapis.com/maps/api/js?key=YOUR_KEY&v=3 "></script> <script src="_content/Vlasdkoqw/objectManager.js"></script> </body> </html>

…

On Thu, Sep 12, 2019 at 10:06 PM Valentas ***@***.***> wrote: I tried to recreate scenario to get exception. I go very similar result when i dont put script tags into _Host.cshtml Could you confirm that these lines exist in _Host.cshtml file? Ps please change YOUR_KEY with your google key <script type="text/javascript" src=" https://maps.googleapis.com/maps/api/js?key=YOUR_KEY&v=3"></script> <script src="_content/Vlasdkoqw/objectManager.js"></script> — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#7?email_source=notifications&email_token=AAIQKW7RWKDJZWMM3LCD53LQJMNTRA5CNFSM4IOZ5SWKYY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOD6T66NY#issuecomment-531099447>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AAIQKWY5SKAOMCC25SID2KLQJMNTRANCNFSM4IOZ5SWA> .

[valentasm1]

I am lost. I dont know hot to help. Last thing, could you try add simple component like this with preview9 or rc1 and let me know if it works

@page "/counter"
@using GoogleMapsComponents
@using GoogleMapsComponents.Maps

<h1>Counter</h1>

<GoogleMap @ref="@map1" Id="map1" Options="@mapOptions"></GoogleMap>


@code {

    private GoogleMap map1;
    private MapOptions mapOptions;

    protected override void OnInitialized()
    {
        mapOptions = new MapOptions()
        {
            Zoom = 13,
            Center = new LatLngLiteral()
            {
                Lat = 13.505892,
                Lng = 100.8162
            },
            MapTypeId = MapTypeId.Roadmap
        };
    }
}

[Redeye51]

Thanks for trying. I went as stripped down as possible and I still received an error. @page "/maps2" @using GoogleMapsComponents @using GoogleMapsComponents.Maps <h3>Maps2</h3> <GoogleMap @ref="@map1" Id="map1"></GoogleMap> @code { private GoogleMap map1; }

…

On Wed, Sep 18, 2019 at 4:27 AM Valentas ***@***.***> wrote: I last. I dont know hot to help. Last thing, could you try add simple component with preview9 or rc1 and let me know if it works @page "/counter" @using GoogleMapsComponents @using GoogleMapsComponents.Maps <h1>Counter</h1> <GoogleMap @***@***.***" Id="map1" ***@***.***"></GoogleMap> @code { private GoogleMap map1; private MapOptions mapOptions; protected override void OnInitialized() { mapOptions = new MapOptions() { Zoom = 13, Center = new LatLngLiteral() { Lat = 13.505892, Lng = 100.8162 }, MapTypeId = MapTypeId.Roadmap }; } } — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#7?email_source=notifications&email_token=AAIQKW7ST325Z755OH45UJTQKIGAVA5CNFSM4IOZ5SWKYY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOD67XSXA#issuecomment-532642140>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AAIQKWZJE7CZ7F72BPMVTXLQKIGAVANCNFSM4IOZ5SWA> .

[valentasm1]

I think you need map options. It should work without it. Could you try to start new solution. Add that component #7 (comment) . Add lines to _Host.cshtml if it wont work please add to zip and upload here.

[Redeye51]

It worked. I'll try it in my current project as well and let you know how it goes. Thanks!!!

…

On Tue, Sep 24, 2019 at 12:48 AM Valentas ***@***.***> wrote: I think you need map options. It should work without it. Could you try to start new solution. Add that component #7 (comment) <#7 (comment)> . Add lines to _Host.cshtml if it wont work please add to zip and upload here. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#7?email_source=notifications&email_token=AAIQKW7C3JHWV7DK4YOTMELQLHA4LA5CNFSM4IOZ5SWKYY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOD7NNVXI#issuecomment-534436573>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AAIQKW4L3FPCRR5WJOFPM7TQLHA4LANCNFSM4IOZ5SWA> .

[valentasm1]

@rungwiroon hey man please update nuget.
@Redeye51 awesome. Happy to hear. If you will have some issues let me know. I had been using it at some aspects. I also could help solve some other issues related to maps.

[Redeye51]

I'm not sure what's going on at the moment. I created another project with the intent of starting from scratch with a new project and pull in the content from my current project. Each project attempt failed with the same issue. I then took the site that did work and started to add Entity Framework and Identity. Once I started adding anything the map started to fail again. Sorry

…

On Wed, Sep 25, 2019 at 12:05 PM Bryan Poteet ***@***.***> wrote: It worked. I'll try it in my current project as well and let you know how it goes. Thanks!!! On Tue, Sep 24, 2019 at 12:48 AM Valentas ***@***.***> wrote: > I think you need map options. It should work without it. Could you try to > start new solution. Add that component #7 (comment) > <#7 (comment)> > . Add lines to _Host.cshtml if it wont work please add to zip and upload > here. > > — > You are receiving this because you authored the thread. > Reply to this email directly, view it on GitHub > <#7?email_source=notifications&email_token=AAIQKW7C3JHWV7DK4YOTMELQLHA4LA5CNFSM4IOZ5SWKYY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOD7NNVXI#issuecomment-534436573>, > or mute the thread > <https://github.com/notifications/unsubscribe-auth/AAIQKW4L3FPCRR5WJOFPM7TQLHA4LANCNFSM4IOZ5SWA> > . >

[rungwiroon]

@valentasm1
I will update it tonight.

[valentasm1]

@rungwiroon I also updated solution to 3.0.0 and recreated demos. Also added Guid to polyline. Had case when needed access it from local js. I think we should think about other solutions in future.

[rungwiroon]

I already started work for better JS objects interop but don't have time to finish it yet.

[rungwiroon]

I've uploaded the new nuget package version 4.6.0-alpha.
Please help to check if it works correctly.

[Redeye51]

Here's the exception. System.NullReferenceException: Object reference not set to an instance of an object. at GoogleMapsComponents.MapComponent.Dispose() at Microsoft.AspNetCore.Components.Rendering.ComponentState.Dispose() at Microsoft.AspNetCore.Components.RenderTree.Renderer.Dispose(Boolean disposing) --- End of stack trace from previous location where exception was thrown --- at Microsoft.AspNetCore.Components.Rendering.HtmlRenderer.HandleException(Exception exception) at Microsoft.AspNetCore.Components.RenderTree.Renderer.Dispose(Boolean disposing) at Microsoft.AspNetCore.Components.RenderTree.Renderer.Dispose() at Microsoft.AspNetCore.Mvc.ViewFeatures.RazorComponents.StaticComponentRenderer.PrerenderComponentAsync(ParameterView parameters, HttpContext httpContext, Type componentType) at Microsoft.AspNetCore.Mvc.Rendering.HtmlHelperComponentExtensions.PrerenderedServerComponentAsync(HttpContext context, ServerComponentInvocationSequence invocationId, Type type, ParameterView parametersCollection) at Microsoft.AspNetCore.Mvc.Rendering.HtmlHelperComponentExtensions.RenderComponentAsync[TComponent](IHtmlHelper htmlHelper, RenderMode renderMode, Object parameters) at RamosOil.Intranet.Pages.Pages__Host.<ExecuteAsync>b__10_1() in C:\[removed]\Pages\_Host.cshtml:line 28 at Microsoft.AspNetCore.Razor.Runtime.TagHelpers.TagHelperExecutionContext.SetOutputContentAsync() at RamosOil.Intranet.Pages.Pages__Host.ExecuteAsync() at Microsoft.AspNetCore.Mvc.Razor.RazorView.RenderPageCoreAsync(IRazorPage page, ViewContext context) at Microsoft.AspNetCore.Mvc.Razor.RazorView.RenderPageAsync(IRazorPage page, ViewContext context, Boolean invokeViewStarts) at Microsoft.AspNetCore.Mvc.Razor.RazorView.RenderAsync(ViewContext context) at Microsoft.AspNetCore.Mvc.ViewFeatures.ViewExecutor.ExecuteAsync(ViewContext viewContext, String contentType, Nullable`1 statusCode) at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeNextResultFilterAsync>g__Awaited|29_0[TFilter,TFilterAsync](ResourceInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted) at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.Rethrow(ResultExecutedContextSealed context) at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.ResultNext[TFilter,TFilterAsync](State& next, Scope& scope, Object& state, Boolean& isCompleted) at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeResultFilters>g__Awaited|27_0(ResourceInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted) at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeNextResourceFilter>g__Awaited|24_0(ResourceInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted) at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.Rethrow(ResourceExecutedContextSealed context) at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted) at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeFilterPipelineAsync>g__Awaited|19_0(ResourceInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted) at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeAsync>g__Logged|17_1(ResourceInvoker invoker) at Microsoft.AspNetCore.Routing.EndpointMiddleware.<Invoke>g__AwaitRequestTask|6_0(Endpoint endpoint, Task requestTask, ILogger logger) at Microsoft.AspNetCore.Authorization.AuthorizationMiddleware.Invoke(HttpContext context) at Microsoft.AspNetCore.Authentication.AuthenticationMiddleware.Invoke(HttpContext context) at Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore.MigrationsEndPointMiddleware.Invoke(HttpContext context) at Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore.DatabaseErrorPageMiddleware.Invoke(HttpContext httpContext) at Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore.DatabaseErrorPageMiddleware.Invoke(HttpContext httpContext) at Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware.Invoke(HttpContext context)

…

On Thu, Sep 26, 2019 at 8:09 AM Rungwiroon Komalittipong < ***@***.***> wrote: I've uploaded the new nuget package version 4.6.0-alpha. Please help to check if it works correctly. — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#7?email_source=notifications&email_token=AAIQKW3I3RHLAL6PJ7KFRZTQLTGDNA5CNFSM4IOZ5SWKYY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOD7V5NGQ#issuecomment-535549594>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AAIQKWZPI4STWNYZYA5H3WLQLTGDNANCNFSM4IOZ5SWA> .

[Redeye51]

Quick update. I created a new project using Identity Server and it worked fine. This same process failed before. I will create a new project and import my old code. Maybe there is a conflict with something in my project. Thanks for your efforts!

…

On Thu, Sep 26, 2019 at 4:59 PM Bryan Poteet ***@***.***> wrote: Here's the exception. System.NullReferenceException: Object reference not set to an instance of an object. at GoogleMapsComponents.MapComponent.Dispose() at Microsoft.AspNetCore.Components.Rendering.ComponentState.Dispose() at Microsoft.AspNetCore.Components.RenderTree.Renderer.Dispose(Boolean disposing) --- End of stack trace from previous location where exception was thrown --- at Microsoft.AspNetCore.Components.Rendering.HtmlRenderer.HandleException(Exception exception) at Microsoft.AspNetCore.Components.RenderTree.Renderer.Dispose(Boolean disposing) at Microsoft.AspNetCore.Components.RenderTree.Renderer.Dispose() at Microsoft.AspNetCore.Mvc.ViewFeatures.RazorComponents.StaticComponentRenderer.PrerenderComponentAsync(ParameterView parameters, HttpContext httpContext, Type componentType) at Microsoft.AspNetCore.Mvc.Rendering.HtmlHelperComponentExtensions.PrerenderedServerComponentAsync(HttpContext context, ServerComponentInvocationSequence invocationId, Type type, ParameterView parametersCollection) at Microsoft.AspNetCore.Mvc.Rendering.HtmlHelperComponentExtensions.RenderComponentAsync[TComponent](IHtmlHelper htmlHelper, RenderMode renderMode, Object parameters) at RamosOil.Intranet.Pages.Pages__Host.<ExecuteAsync>b__10_1() in C:\[removed]\Pages\_Host.cshtml:line 28 at Microsoft.AspNetCore.Razor.Runtime.TagHelpers.TagHelperExecutionContext.SetOutputContentAsync() at RamosOil.Intranet.Pages.Pages__Host.ExecuteAsync() at Microsoft.AspNetCore.Mvc.Razor.RazorView.RenderPageCoreAsync(IRazorPage page, ViewContext context) at Microsoft.AspNetCore.Mvc.Razor.RazorView.RenderPageAsync(IRazorPage page, ViewContext context, Boolean invokeViewStarts) at Microsoft.AspNetCore.Mvc.Razor.RazorView.RenderAsync(ViewContext context) at Microsoft.AspNetCore.Mvc.ViewFeatures.ViewExecutor.ExecuteAsync(ViewContext viewContext, String contentType, Nullable`1 statusCode) at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeNextResultFilterAsync>g__Awaited|29_0[TFilter,TFilterAsync](ResourceInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted) at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.Rethrow(ResultExecutedContextSealed context) at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.ResultNext[TFilter,TFilterAsync](State& next, Scope& scope, Object& state, Boolean& isCompleted) at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeResultFilters>g__Awaited|27_0(ResourceInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted) at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeNextResourceFilter>g__Awaited|24_0(ResourceInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted) at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.Rethrow(ResourceExecutedContextSealed context) at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted) at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeFilterPipelineAsync>g__Awaited|19_0(ResourceInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted) at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeAsync>g__Logged|17_1(ResourceInvoker invoker) at Microsoft.AspNetCore.Routing.EndpointMiddleware.<Invoke>g__AwaitRequestTask|6_0(Endpoint endpoint, Task requestTask, ILogger logger) at Microsoft.AspNetCore.Authorization.AuthorizationMiddleware.Invoke(HttpContext context) at Microsoft.AspNetCore.Authentication.AuthenticationMiddleware.Invoke(HttpContext context) at Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore.MigrationsEndPointMiddleware.Invoke(HttpContext context) at Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore.DatabaseErrorPageMiddleware.Invoke(HttpContext httpContext) at Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore.DatabaseErrorPageMiddleware.Invoke(HttpContext httpContext) at Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware.Invoke(HttpContext context) On Thu, Sep 26, 2019 at 8:09 AM Rungwiroon Komalittipong < ***@***.***> wrote: > I've uploaded the new nuget package version 4.6.0-alpha. > Please help to check if it works correctly. > > — > You are receiving this because you were mentioned. > Reply to this email directly, view it on GitHub > <#7?email_source=notifications&email_token=AAIQKW3I3RHLAL6PJ7KFRZTQLTGDNA5CNFSM4IOZ5SWKYY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOD7V5NGQ#issuecomment-535549594>, > or mute the thread > <https://github.com/notifications/unsubscribe-auth/AAIQKWZPI4STWNYZYA5H3WLQLTGDNANCNFSM4IOZ5SWA> > . >

[valentasm1]

I could confirm that it works for me. Client side version.

[Karluzo]

@valentasm1 You should delete your Google maps API key from this public chat.

[Karluzo]

I have the same problem. I have created empty Blazor project, added latest alpha version and modified _Host.cshtml file. I have observed that when I put the my razor component in Shared folder (with no _Host.cshtml in it) I get the error. Otherwise I do not get the error - in Pages folder. Still I can get only the text "Sorry, there's nothing at this address."
When I am trying to make the BlazorGoogleMaps work in normal Razor pages project (but in a razor component), there is no _host.cshtml to modify and I am getting still the error.

[Karluzo]

Thanks, I am learning razor and blazor and I am using this scenario for my project - using razor components in a razor page:
https://www.mikesdotnetting.com/article/338/using-razor-components-in-a-razor-page
using RenderComponentAsync.

[Cameron097]

May be worth adding that to the docs until a work around is found or maybe that's just how it's meant to be?

[valentasm1]

@Karluzo do you still have issue after apply RenderComponentAsync ?

[valentasm1]

@Karluzo do you still have issue after apply RenderComponentAsync ?
Could i close issue?

[valentasm1]

Closing due inactivity