Hi @hsbasu, The gnome extension does not play well with the python plugin. This is the first error you will run into in my experience and was documented at Core22 gnome extension and broken symlinks and as far as I can tell there have been issues with the gnome extension + python as far back as 2020 according to Gnome-3-34 extension and Python segfault - #12 by goldstar611
The good news is that Unrud did an excellent job documenting his workarounds in the video downloader snap at video-downloader/snap/snapcraft.yaml at master · Unrud/video-downloader · GitHub and I have abbreviated at Python Plugin + Gnome 3 Extension Error - #7 by goldstar611
Hope that helps you after you get past the symlink issue.