Hi, Since the crash is in libgio, it could be a bug in it (or maybe libgtk) instead of Caja. A backtrace is needed to know for sure. You can use coredumpctl tool from systemd-coredump package to see the backtrace.
You'll also need -dbgsym packages from http://debug.mirrors.debian.org/debian-debug/ repos. Which Debian version are you actually running? This part of your system info confuses me: Debian Release: buster/sid APT prefers stable-updates APT policy: (500, 'stable-updates'), (500, 'testing'), (500, 'stable') A mix of stable and testing repos?
