I did find this issue Backup (+webadmin) not accessible anymore - #3 by isidoreisou I may try to remove every backup but the most recent ones to see if that corrects any issues with bad archives.
I did find this issue Backup (+webadmin) not accessible anymore - #3 by isidoreisou I may try to remove every backup but the most recent ones to see if that corrects any issues with bad archives.