Probably nobody knows the answer...
What happened when you tried to reinstall OMV? Did you get an error. That seems to be the only thing you didnt provide output on.
Shellinabox... I'm curious why you'd use that on the host, when wetty is so easy to install in docker (and with OMV 6, is a plugin). Since this happened there, I'd try removing/purging shellinabox, then running the reinstall openmediavault command, but that's just me... frankly if this went on this long I'd have just reinstalled already