Warning:  [mysql error 144] Table './piwigo/piwigo_sessions' is marked as crashed and last (automatic?) repair failed

SELECT data
  FROM piwigo_sessions
  WHERE id = '0A0Ars2i6m2u9nu4a2ph76t9nq37s6'
; in /var/www/html/piwigo/include/dblayer/functions_mysqli.inc.php on line 856