@nir.arad
To be honest I am puzzled by your bug... I'll let you know if I find out where that comes from.
@Centauria
It seems you have installed reapy through Anaconda? I am not an Anaconda expert but from your traceback I am guessing REAPER might have trouble finding the path to your conda environment... Could you try running the following inside REAPER and show us the result?
Code:
import sys
RPR_ShowConsoleMsg(sys.path)