Cant't save calendar event as repeatable every 2 weeks

I have tried to edit a calendar event and change its repeat option to "every 2 weeks". Every time i do this i get an error message with exception log like below:

[MainProcess Worker-2 ] ERROR 2018-04-13 09:00:39,073 hiri.util.exception - unsupported locale setting
Traceback (most recent call last):
File "hiri/util/dates.py", line 347, in en_locale_time_context
File "/home/ubuntu/.virtualenvs/hiri/lib/python3.5/locale.py", line 594, in setlocale
locale.Error: unsupported locale setting

Supposedly locale is wrong though every other repeat option works good and lets me save my calendar event. Exception is thrown while creating new event as well as updating old one. My ews locale should be set to pl-PL.

Logs in attachement

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  • Apr 13 2018
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