The `onerror` event in `img` elements isn't being triggered correctly when SSR is involved about nullstack

[GuiDevloper]

Were taking a look on this, hard to reproduce since it happens in SSR deploy and first load (when server starts and delivers the first render).

Anyway, a fast fix lies in context.environment.client:

class Application extends Nullstack {

  showDefault = false
  possiblyInvalidUrl = '/invalid.png'

  render({ environment }: NullstackClientContext) {
    return (
      <>
        {this.showDefault && <h1>Default!!</h1>}
        {environment.client && (
          <img src={this.possiblyInvalidUrl} onerror={{ showDefault: true }} />
        )}
      </>
    )
  }
}

[SD007CSE]

I am new in contribution can you tell me where to find this above line, so that I can give it a try to solve the issue.

[Mortaro]

Heyo, sorry for the late response (/ω＼),

This issue is probably happening during the hydration process, but it is a bit more complicated than it looks like.

Right now the way Nullstack loads quickly is by being plain HTML untill all the paints are done, and this error raises during paintint, the best i can think of to solve this without tradeoffs would be to update the client/render.js and maybe client/rerender.js to try load the image again and if an error happen trigger the onerror event again