Warning:  [mysql error 23] Out of resources when opening file './gim18/piwigo_sessions.MYD' (Errcode: 24)

SELECT data
  FROM piwigo_sessions
  WHERE id = '12E3pghf98uv77tmad93i0g64tbdf2'
; in /home/gim18/www/www.gim18.srv.pl/galeria/include/dblayer/functions_mysqli.inc.php on line 830

Warning:  [mysql error 23] Out of resources when opening file './gim18/piwigo_images.MYD' (Errcode: 24)
SELECT DISTINCT id  FROM piwigo_images
INNER JOIN piwigo_image_category ON id = image_id
    WHERE (category_id NOT IN (5,6,7,8,9,10,12,624))
   AND date_creation BETWEEN '2017-12-06' AND '2017-12-06 23:59:59'
  ORDER BY date_creation ASC, date_available DESC, file ASC, id ASC in /home/gim18/www/www.gim18.srv.pl/galeria/include/dblayer/functions_mysqli.inc.php on line 830

Warning:  [mysql error 23] Out of resources when opening file './gim18/piwigo_sessions.MYD' (Errcode: 24)

REPLACE INTO piwigo_sessions
  (id,data,expiration)
  VALUES('12E3pghf98uv77tmad93i0g64tbdf2','pwg_device|s:7:\"desktop\";pwg_mobile_theme|b:0;pwg_show_metadata|b:1;',now())
; in /home/gim18/www/www.gim18.srv.pl/galeria/include/dblayer/functions_mysqli.inc.php on line 830