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

SELECT data
  FROM piwigo_sessions
  WHERE id = '365350b35fnaaeipnkmbbvclinr590'
; in /var/www/sites/walkarounds/include/dblayer/functions_mysqli.inc.php on line 845
Fatal error: Uncaught Error: Call to a member function fetch_assoc() on boolean in /var/www/sites/walkarounds/include/dblayer/functions_mysqli.inc.php:226 Stack trace: #0 /var/www/sites/walkarounds/include/functions_session.inc.php(148): pwg_db_fetch_assoc(false) #1 [internal function]: pwg_session_read('50b35fnaaeipnkm...') #2 /var/www/sites/walkarounds/include/common.inc.php(156): session_start() #3 /var/www/sites/walkarounds/index.php(26): include_once('/var/www/sites/...') #4 {main} thrown in /var/www/sites/walkarounds/include/dblayer/functions_mysqli.inc.php on line 226
Warning: [mysql error 145] Table './piwigo/piwigo_sessions' is marked as crashed and should be repaired

REPLACE INTO piwigo_sessions
  (id,data,expiration)
  VALUES('365350b35fnaaeipnkmbbvclinr590','',now())
; in /var/www/sites/walkarounds/include/dblayer/functions_mysqli.inc.php on line 845