Thank you, your post guided me to the problem. When i was installing package in my PyCharm IDE it was installing only localy, so there was nothing installed inside:
C:\Users\User2\AppData\Local\Programs\Python\Python38\Lib\site-packages
Therefore uipath were throwing “pipe is broken” error. I have installed packages required for project using windows command line and it installed finally packages where i wanted. Now i can run my python script. Marking as solved.