Thanks ChuckPa, I found my solution.
I was unable to access the ip:32400/manage as ip:32400 itself get stuck never loading.
I was, however, able to find my logs through your post and found the error that was showing up.
After googling for that error, I found an old post from 2018 that you had a few replies on: Server not starting after update, Warning: ex: boost::filesystem::last_write_time: No such file
I followed the fix there, which was basically uninstall PMS, reinstall PMS using the latest x64 .spk on the website, without touching anything else.
That fixed it, and my Plex is up and running again, thanks!
