Warning:  [mysql error 1194] Table 'piwigo_sessions' is marked as crashed and should be repaired

DELETE
  FROM piwigo_sessions
  WHERE UNIX_TIMESTAMP(NOW()) - UNIX_TIMESTAMP(expiration) > 3600
; in /srv/www/vhosts/fotobanka/public_html/foto/include/dblayer/functions_mysqli.inc.php on line 847