anybody know why? "413 error"
413 means the file size is too big. Try making the file smaller. Either by shrinking the file or converting it to another format.
grazie. is there a list of these codes somewhere?
https://developer.mozilla.org/en-US/docs/Web/HTTP/Status
418 is particularly important.
Does Mozilla mention what their spaghetti policy is?
spaghetti is allowed, but not with tomato sauce. tomatoes are toxic for foxes