When i take a screenshot , it gets copied to clipboard,
and then nautilus is open, it crashes and doesn’t open
Might be gitlab gnome org GNOME nautilus issue 2539 (sorry I cannot paste links there) if your nautilus is version 43 and your screenshot tool calls into xclip (or any other tool that triggers the x-special/gnome-copied-files mime type clipboard deserializer, here barrier software KVM). A workaround is on the way in nautilus (for the issue I am talking about, yours might be otherwise). Still, it is not a nautilus bug per see but the fact that nautilus is not resilient to incorrect content for this mime type.