Problems with Editor

I would like to give some feedback about problems in editor. Since "Pawn Brotherhood" quest i had problems with print output information - it's just does nothing! So, for debugging i have to use PyCharm and i's does well. In "min-max" quest i'm still have this problem, but also have strange TypeError, which not throwed in PyCharm. Screenshots are attached.

From: https://py.checkio.org/mission/min-max/solve/

HTTP_USER_AGENT:

Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36