Arena-Арена.lua:93 error

[Shodann]

RealUI ## Version: 8.1 r19f
WoW Cyrillic version
OS — Win 7x64 or 10x64 cyrillic
Got this error many times, for example each time when my DH ports to/from Order Hall
Attachment include:
1) standard wow error report;
2) nibRealUI_Init.lua
3) taint.log
Link to the zip with logs