OB2 ArgumentException

I got this error and try to fix it but failed , I need help

ArgumentException

Invalid assembly qualified name ‘IronPython.Runtime.PythonContext, IronPython,
Version=2.7.11.0, Culture=neutral, PublicKeyToken=7f709c5b7 13576e1’ (Parameter
‘languageTypeName’)

Hi, maybe redownload OB2 or make sure you have a dll file for IronPython in one of the folders inside the OB2 root dir.

I tried to redownload OB2 and other version still appear this error , recheck dll file

Damn, please open an issue on github providing as much detail as possible (e.g. the LoliCode of the config, your OS, etc.) to replicate the issue on my pc