It looks like the issue you are facing is related to line 224 in the Carroom.cs file of the NeptuneEvo project within the dotnet\resources folder. Check that specific line of code to identify the problem causing the error.
I updated Autoshop, while I was making the settings, the core was corrupted, we can close the issue, thank you, they entered the vehicle colors differently, I fixed them, bought a build and solved the problem.