And? 1xx you do not care 2xx you are fine and do not care 3xx you are redirected and do not care 4xx crap, the client is wrong, you cannot do anything becau

And? 1xx you do not care 2xx you are fine and do not care 3xx you are redirected and do not care 4xx crap, the client is wrong, you cannot do anything because the app is wrong 5xx crap, the server is wrong and you cannot do anything either. "You hit a problem, it was reported to the devs, sorry. Try later" is the only reasonable message for normal users