ERR_NGROK_8012 plus ConstructorError

[Olymmpia]

I am zero in coding. But, please, if you can help, this error keeps persisting, even in paid collab subscriptions. On click on URL link I get this ERR_NGROK_8012. That guy in the video doesn't help, as I said, I m dummie, I have no idea what he is doing. Also at the end this : ConstructorError: while constructing a mapping
in "/root/invokeai/configs/models.yaml", line 2, column 2
found duplicate key weights
in "/root/invokeai/configs/models.yaml", line 10, column 2

If you could give me a simple step by step what to do, I would be more than happy.