Im on mac and it always shows an error occurred, help

Using the web editor?

Make sure the address you are using starts with https://, not http://.

I had a similar story. I was trying to make a game, and it either wouldn't load, or it had a lot of internal errors. I ended up deleting it before I realised that it, for whatever reason, would work if I didn't have a special background colour. If you can get into your game, maybe try it? I don't think there could be any harm in trying?