Help me understand sys-net log after crash

I’ve had sys-net crash a couple of times recently, and in the most recent event I checked the log and found the following. I’m assuming there is a standard explanation, I just want some help to better understand what this log says in order to improve my future troubleshooting. Fyi my sys-net is a disposable debian-11.

Icon size: 128x128
Falling back to setting _NET_WM_USER_TIME on the root window
ErrorHandler: BadAccess (attempt to access private resource denied)
Major opcode: 130 (MIT-SHM)
Minor opcode: 1 (X_ShmAttach)
ResourceID: 0x2200005
Failed serial number: 846
Current serial number: 847
XShmAttach failed for window 0x4400143(remote 0x200003)
Window 0x4400153 is still set as transient_for for a 0x4400163 window, but VM tried to destroy it
ErrorHandler: BadAccess (attempt to access private resource denied)
Major opcode: 130 (MIT-SHM)
Minor opcode: 1 (X_ShmAttach)
ResourceID: 0x44009f5
Failed serial number: 23166
Current serial number: 23167
XShmAttach failed for window 0x44009f2(remote 0x201656)
libvchan_is_eof
Icon size: 128x128
Falling back to setting _NET_WM_USER_TIME on the root window
domain dead
Failed to connect to gui-agent

This is all that was in the log. Let me know if this log doesn’t really add any info. In the qrexec log it just had ‘vchan disconnected vchan reconnecting’ a bunch of times. What exactly is this log saying went wrong with sys-net. Thanks.

AFAIK sys-net has 4 different log files visible in dom0. Usually if sys-net crashes, the most valuable log file should be the sys-net console log (/var/log/xen/console/guest-sys-net.log) which is the immediate log file visible in Qube Manager right-click menu of sys-net.