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

SELECT data
  FROM master_sessions
  WHERE id = '36C4k7b7lurch9s03no5861ge69262'
; in /hsphere/local/home/zappa/fotolangeland.dk/Piwigo/piwigo/include/dblayer/functions_mysqli.inc.php on line 845
Fatal error: Call to a member function fetch_assoc() on boolean in /hsphere/local/home/zappa/fotolangeland.dk/Piwigo/piwigo/include/dblayer/functions_mysqli.inc.php on line 226
Warning: [mysql error 145] Table './Zappa_Fotolangeland/master_sessions' is marked as crashed and should be repaired

REPLACE INTO master_sessions
  (id,data,expiration)
  VALUES('36C4k7b7lurch9s03no5861ge69262','',now())
; in /hsphere/local/home/zappa/fotolangeland.dk/Piwigo/piwigo/include/dblayer/functions_mysqli.inc.php on line 845