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 /var/www/html/fotosjuancarlos.es/include/dblayer/functions_mysqli.inc.php on line 847

Warning:  [mysql error 126] Incorrect key file for table './piwigo_db/piwigo_sessions.MYI'; try to repair it

REPLACE INTO piwigo_sessions
  (id,data,expiration)
  VALUES('D849fkdrcovfvkleqps1l0kd9b21rd','pwg_device|s:7:\"desktop\";pwg_mobile_theme|b:0;',now())
; in /var/www/html/fotosjuancarlos.es/include/dblayer/functions_mysqli.inc.php on line 847