I would like to give some feedback about ...

From: https://checkio.org/mission/open-labyrinth/solve/

HTTP_USER_AGENT:

Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/50.0.2661.102 Safari/537.36

My solution solves all the problems but once complete the little arrow animation completes half its path then blinks back to the start, repeats 3-4 times then I get 'ErrUchIsDown' displayed in the console and the arrow completes the full path but no recognition and perpetual loading.