I've been getting the same problem as https://github.com/CMahaff/lasim/issues/20 and tried about every 10-15 minutes, every hour for about 6 hours yesterday and then again just now with no luck. Should I raise a new issue or comment on that closed one? I don't know what the etiquette is unfortunately.
Do you get any additional information in your error log?
If not, would you be open to running a version with additional debugging statements to help identify the cause of the failures?
I know there is an issue when .world is overloaded where this happens, but if it's happening constantly it has to be something specific with your account vs mine.