Copying assembly from 'Temp/UnityEditor.XR.LegacyInputHelpers.dll' to 'Library/ScriptAssemblies/UnityEditor.XR.LegacyInputHelpers.dll' failed unity error code example
Example: Copying assembly from 'Temp/Assembly-CSharp-Editor.dll' to 'Library/ScriptAssemblies/Assembly-CSharp-Editor.dll' failed
//Try :
//Reimporting a script
//Restarting unity