xml document error after upgrade

[kinghat]

Your user accounts are in jellyfin.db.  The settings were in the XML files that were corrupt on null.  You probably need to start from scratch. 

my user accounts dirs are still there, does that matter at all? also, the only xml file that was empty/ruined, as far as i can tell, was the migrations.xml.

EDIT:

so i just stumbled upon a backup i took and most of the DBs have a modified date of late last year(though i think that was the date the data was moved because im missing users in the user dir that were added way before that date). i tried to open its jellyfin.db and got the same disk io error as trying to open my current jellyfin.db so maybe my jellyfin dbs are fine? the error in DB Browser:

Could not open database file.
Reason: disk I/O error