Trouble upgrade V16

i have upgrade my tryout server and that is on a 22.04 ubuntu but my standard server run 20.04 and it gives this error "Unknown column ‘u.national_registration_number’ in ‘field list’ "

shut i update to ubuntu 22.04

i have now upgrade to 22.04 and it is still same problem ? and it happens when i try to login to Dolibarr
Tryout(Test) server it have been install with V17 alpha before and i just install V16 on top?
that one is working

It is not possible to downgrade the database from a higher version to a lower one. In order to test v16 after the installation of v17, you should do it with a new, empty database.

the one i have problem with is my main installation and the other one is my test setup and that one is running so i think it is some bug in standard setup probably something with my danish language

Solved by install OS (Ubuntu 22.04.1) again and clean out all old things from Ubuntu 18.04 → 20.04