Client Transport Error Timeout: kcp2k.KcpClient: ReceiveNextReliable() msgSize returns -1 about mirror

[MrGadget1024]

Can you reproduce this with any of the examples that ship with Mirror, e.g. the Basic example?

[simoncabansag]

Can you reproduce this with any of the examples that ship with Mirror, e.g. the Basic example?

Can you please link the Basic Example, I will reproduce it on there

[MrGadget1024]

Can you please link the Basic Example, I will reproduce it on there

It's included in Mirror...Examples / Basic folder.

[simoncabansag]

I've reproduced the error on the Mirro Basic example you mentioned, it resulted in the same, one thing that I forgot to say was that I'm using PlayFabSDK, GSDK, this server I deployed is built with PlayFabMultiplayerServer in mind, and Mirror is trying to communicate to that server without any luck, so it could be on their end,
Originally I have been following this person's tutorial https://www.youtube.com/watch?v=YTNdsvTBEcA&t=806s, but of course it is outdated

[simoncabansag]

Hey, I've fixed it now already thank you so much for your assistance was from debugging and using the LocalMultiplayerAgent that I found the error, this was the server output

2023-12-15 19:42:40 KcpServer: already started!
2023-12-15 19:42:40 NetworkServer.RegisterHandler replacing handler for Mirror.ReadyMessage, id=40252. If replacement is intentional, use ReplaceHandler instead to avoid this warning.
2023-12-15 19:42:40 NetworkServer.RegisterHandler replacing handler for Mirror.CommandMessage, id=46228. If replacement is intentional, use ReplaceHandler instead to avoid this warning.
2023-12-15 19:42:40 NetworkServer.RegisterHandler replacing handler for Mirror.NetworkPingMessage, id=33151. If replacement is intentional, use ReplaceHandler instead to avoid this warning.
2023-12-15 19:42:40 NetworkServer.RegisterHandler replacing handler for Mirror.NetworkPongMessage, id=10297. If replacement is intentional, use ReplaceHandler instead to avoid this warning.
2023-12-15 19:42:40 NetworkServer.RegisterHandler replacing handler for Mirror.EntityStateMessage, id=1041. If replacement is intentional, use ReplaceHandler instead to avoid this warning.
2023-12-15 19:42:40 NetworkServer.RegisterHandler replacing handler for Mirror.TimeSnapshotMessage, id=53182. If replacement is intentional, use ReplaceHandler instead to avoid this warning.

from this I found this help post where I found the solution, https://community.playfab.com/questions/60882/bug-in-localmultiplayeragent.html