default.scaffold.lua:174 error

[Shodann]

RealUI ## Version: 8.1 r19g
WoW Cyrillic version
Windows 7x64 and 10x64 cyrillic
Got this error immediately after loading interface and opening bags. Also content of the bags 1st time shows as shown on the screenshot included. After «/rl» content of the bags shows normally, but in the future content renews only after interface reloading, using «/rl» command.
ZIP with taint.log included
WoW error code frame content:

3x ...Bags_Nivaya\cargBags\mixins-add\default.scaffold.lua:174: bad argument #2 to 'SetFormattedText' (number expected, got nil)
[C]:: in function 'SetFormattedText'
...Bags_Nivaya\cargBags\mixins-add\default.scaffold.lua:174: in function 'Update'
...Ons\cargBags_Nivaya\cargBags\base\implementation.lua:481: in function 'UpdateSlot'
...Ons\cargBags_Nivaya\cargBags\base\implementation.lua:507: in function 'UpdateBag'
...Ons\cargBags_Nivaya\cargBags\base\implementation.lua:304: in function <...Ons\cargBags_Nivaya\cargBags\base\implementation.lua:302>

Locals:
(*temporary) = <unnamed> {
 0 = <userdata>
}
(*temporary) = "+%d"
(*temporary) = nil
(*temporary) = "number expected, got nil"