ProperTree not working on Catalina

I can not enter my config.plist, I can not put new kext or do absolutely nothing. The same goes for MountEFI

https://preview.redd.it/55giac557se61.png?width=1620&format=png&auto=webp&s=1d9f8cb8cee6d18961cd3cf9ac77605b55ddf75f