Hello,
While evaluating pve 5.2 on a server I ran into an lxc vm that refused to start. The error I was able to retrieve mentioned this:
lxc-start 101 20180706154548.805 INFO lxc_conf - conf.c:run_script_argv:368 - Executing script "/usr/share/lxc/hooks/lxc-pve-prestart-hook" for container...