Of course new errors as always. This is longest and worse migration I ever did.
Installed fresh 4.9.11 - working.
Pointed shop to DB backup from 4.9.11 I did while 4.9.11 was working under 5.3.0 - shop offline!
How this ever could be possible?
Eshop files from fresh working installation.
DB swapped for working 4.9.11 DB.
/tmp deleted
Nothing else changed.
Wanted to navigate to admin backgroung to Update views - shop offline!
This is really not funny.
Reverted back to DB created by installation - shop offline! Definitely makes no sense to me.