DB column error

hi, I've got an error in the server logs about a missing column in the database (running version 0.54)

[...]
previous line is a big query
[...]
server-1  | error: error: column taskTarget.onboardingId does not exist

[...]
previous line is a big query
[...]
server-1  | error: error: column taskTarget.onboardingId does not exist

[...]
previous line is a big query
[...]
server-1  | error: error: column taskTarget.onboardingId does not exist

[...]
previous line is a big query
[...]
server-1  | error: error: column taskTarget.onboardingId does not exist

The web UI is empty and displays the same error (see image)
How can I fix this in the best way possible?