Warning: [mysql error 145] Table './sofisoft_piwigo/piwigo_sessions' is marked as crashed and should be repaired

SELECT data
  FROM piwigo_sessions
  WHERE id = 'D849r8uhb9l0c4su2b4g94jbb9n5f6'
; in /www/sofisoft.net/albums/include/dblayer/functions_mysqli.inc.php on line 847
Fatal error: Call to a member function fetch_assoc() on a non-object in /www/sofisoft.net/albums/include/dblayer/functions_mysqli.inc.php on line 211