Unity.Netcode.SceneEventData.DeserializeScenePlacedObjects Error

[AliasgarBohra]

Description

I just dont understand, this error i get everytime for 1-2 scenes. As soon as it loads. This error comes and many inplaced network objects few disappeared, few appeared. And also everything on that scene just corrupts related to Network.

Full Trace

NullReferenceException: Object reference not set to an instance of an object
Unity.Netcode.SceneEventData.DeserializeScenePlacedObjects () (at ./Library/PackageCache/com.unity.netcode.gameobjects@bd2a018756ed/Runtime/SceneManagement/SceneEventData.cs:897)
Unity.Netcode.NetworkSceneManager.OnClientLoadedScene (System.UInt32 sceneEventId, UnityEngine.SceneManagement.Scene scene) (at ./Library/PackageCache/com.unity.netcode.gameobjects@bd2a018756ed/Runtime/SceneManagement/NetworkSceneManager.cs:1878)
Unity.Netcode.NetworkSceneManager.OnSceneLoaded (System.UInt32 sceneEventId) (at ./Library/PackageCache/com.unity.netcode.gameobjects@bd2a018756ed/Runtime/SceneManagement/NetworkSceneManager.cs:1806)
Unity.Netcode.SceneEventProgress.<SetAsyncOperation>b__38_0 (UnityEngine.AsyncOperation asyncOp2) (at ./Library/PackageCache/com.unity.netcode.gameobjects@bd2a018756ed/Runtime/SceneManagement/SceneEventProgress.cs:280)
UnityEngine.AsyncOperation.InvokeCompletionEvent () (at <e2f443b25d304a2687b17dc8ac7af722>:0)

Environment

• OS: Windows
• Unity Version: 6000.0.61f1
• Netcode Version: 2.7.0 (Latest)0

Additional Context

It works when I completely create new scene and paste all my objects there.

[EmandM]

This indicates that the server and the client have serialized different values for either the network prefabs or the scene handle. Has the issue reoccured after you created a new scene?

[AliasgarBohra]

The issue gets fixed when I copy all content from old scene on newly created scene. Everything gets fixed

[EmandM]

Does it come back after some time? Or does it stay fixed?

[AliasgarBohra]

It comes again if I creating new scenes, it's just weird bug. It sometimes makes my old scenes corrupted and I have to re create scene to fix it. It's rare bug. But happened to me a lot of times.