Warning: [mysql error 145] Table './db478265290/piwigo_sessions' is marked as crashed and should be repaired

SELECT data
  FROM piwigo_sessions
  WHERE id = '36C4aj1jtotftvdehikuevkf7g2gs5'
; in /var/www/vhosts/liveboat.it/httpdocs/gallery/include/dblayer/functions_mysqli.inc.php on line 845
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Warning: [mysql error 145] Table './db478265290/piwigo_sessions' is marked as crashed and should be repaired

REPLACE INTO piwigo_sessions
  (id,data,expiration)
  VALUES('36C4aj1jtotftvdehikuevkf7g2gs5','pwg_mobile_theme|b:0;pwg_device|s:7:\"desktop\";',now())
; in /var/www/vhosts/liveboat.it/httpdocs/gallery/include/dblayer/functions_mysqli.inc.php on line 845