So i was working on a project in Unity 2018.3.5f1 and then i upgrade the project to 2018.3.14f1 and all of the sudden, when i press play, this error comes up at play (the attached screenshot). I went to the path that its suggested there, but there is not .json file nasmed like that. I reverted back to the initial version on Unity and still i have this error on play, wich doesn't let me play the project. Any ideas on why is this happening? have you got the same error? Thank you!