Wow, you tried to roll back to a version that was released mar. 2016 !
If that was the version you used before, then do note, that the database migration could take a VERY LONG time
And with all respect, but expecting to be able to roll back +5 years of versions, is kinda strecting it, in my personal opinion
What I can suggest, is that you use a backup database from then, and run newest version, and after powering up, let it sit there for a couple of hours, before trying anything else
Please expand on above
