As soon as I finished created my world and I clicked Build & Test , it runs for a while and this happens. I tried pressing Reload/Ignore again and again, nothing happens. I tried using both SDK2 and SDK3 but it does not make any difference, I tried searching for a solution on Google and r/vrchat on Reddit but came out empty handed as well. A Reditor commented however, to tell me to create a new scene and build a new world again so I did. Unfortunately it did not solve the issue.
PS: My Unity is at the latest patch, Unity 2019.4.29f1