Hi

I've upgraded my site to 12.1.0 and it still works. But I can't get access to my admin.php

I get an error message like this:

Warning:  [mysql error 1146] Table 'XX.piwigo_lounge' doesn't exist

SELECT
    image_id
  FROM piwigo_lounge
; in /XX/photos/piwigo/include/dblayer/functions_mysqli.inc.php on line 847

I've no idea what the above means, or how to fix it.

Can anyone point me in the right direction?

Many thanks in anticipation