Avatar has been uploading fine till I updated to latest VRC SDK in unity (3.10.1 or 3.10.3)

I have no idea, tried already reinstalling the SDK and everything and reloading the SDK still giving this error

Avatar validation failed
UnityEngine.Logger:Log (UnityEngine.LogType,object,UnityEngine.Object)
(wrapper dynamic-method) UnityEngine.Debug:UnityEngine.Debug.LogError_Patch1 (object,UnityEngine.Object)
VRC.Core.Logger:LogError (string,string,UnityEngine.Object)
VRC.SDK3A.Editor.VRCSdkControlPanelAvatarBuilder/d__152:MoveNext () (at ./Packages/com.vrchat.avatars/Editor/VRCSDK/SDK3A/VRCSdkControlPanelAvatarBuilder.cs:3309)
System.Runtime.CompilerServices.AsyncVoidMethodBuilder:Start<VRC.SDK3A.Editor.VRCSdkControlPanelAvatarBuilder/d__152> (VRC.SDK3A.Editor.VRCSdkControlPanelAvatarBuilder/d__152&)
VRC.SDK3A.Editor.VRCSdkControlPanelAvatarBuilder:BuildError (object,string)
VRC.SDK3A.Editor.VRCSdkControlPanelAvatarBuilder/d__143:MoveNext () (at ./Packages/com.vrchat.avatars/Editor/VRCSDK/SDK3A/VRCSdkControlPanelAvatarBuilder.cs:2989)
System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1<System.Exception>:Start<VRC.SDK3A.Editor.VRCSdkControlPanelAvatarBuilder/d__143> (VRC.SDK3A.Editor.VRCSdkControlPanelAvatarBuilder/d__143&)
VRC.SDK3A.Editor.VRCSdkControlPanelAvatarBuilder:HandleBuildError (System.Exception)
VRC.SDK3A.Editor.VRCSdkControlPanelAvatarBuilder/d__141:MoveNext () (at ./Packages/com.vrchat.avatars/Editor/VRCSDK/SDK3A/VRCSdkControlPanelAvatarBuilder.cs:2874)
UnityEngine.UnitySynchronizationContext:ExecuteTasks ()

The root cause is not shown in your screenshot or pasted logs.

  • Check the SDK builder for errors in “Review Any Alerts”.
  • Make sure your other project dependencies are the latest versions compatible with your currently installed SDK version.
  • Is your blueprint ID set correctly? (Blank if uploading a new avatar)
  • Find the actual other error message with the root cause failure from your console.

Which platform are you trying to build for?