I found the same error today. Although the solution of removing the animation works, it can’t be the final solution. I sent as well a detailed report about it. Let’s see what they answer.
Also, I tried to create a blank project using C++ and add the third person components later. For this case, the game runs, but it can’t find the player when is loaded. So the camera is totally free. Does anyone has a suggestion for it? The error for this case is:
Default Property warnings and errors:
Error: CDO Constructor (TP_ThirdPersonGameMode): Failed to find /Game/ThirdPerson/Blueprints/BP_ThirdPersonCharacter.BP_ThirdPersonCharacter_C
Thanks.