update circles --> db error --> NC stays in maintenance mode

[miconx]

1. i made a normal upgrade of the circles app (i use nextcloud 12.0.2)

sudo -u www-data php /usr/local/bin/occ upgrade

Doctrine\DBAL\Exception\NotNullConstraintViolationException: An exception occurred while executing 'ALTER TABLE oc_circles_members ADD "user_type" SMALLINT NOT NULL':

SQLSTATE[23502]: Not null violation: 7 ERROR: column "user_type" contains null values
Update failed

[LukasReschke]

Probably related to #6163

[LukasReschke]

cc @daita

[ArtificialOwl]

there is a quick fix there: nextcloud/circles#117 (comment)

I'll check for the real source of the issue.