Warning:  [mysql error 1021] Disk got full writing '.(temporary)' (Errcode: 28 "No space left on device")

SELECT DISTINCT i.*
  FROM images i
    INNER JOIN image_category AS ic ON id=image_id
  WHERE (ic.category_id NOT IN (92,99,151,203,238))
    AND date_available='2025-12-14 11:37:15'
  ORDER BY RAND()
  LIMIT 6
; in /var/www/piwigo__3/include/dblayer/functions_mysqli.inc.php on line 847

Fatal error: Uncaught Error: Call to a member function fetch_assoc() on bool in /var/www/piwigo__3/include/dblayer/functions_mysqli.inc.php:913 Stack trace: #0 /var/www/piwigo__3/include/functions_notification.inc.php(482): query2array() #1 /var/www/piwigo__3/include/functions_notification.inc.php(521): get_recent_post_dates() #2 /var/www/piwigo__3/feed.php(151): get_recent_post_dates_array() #3 {main} thrown in /var/www/piwigo__3/include/dblayer/functions_mysqli.inc.php on line 913