Warning:  [mysql error 1053] Server shutdown in progress

SELECT
    c.*,
    user_representative_picture_id,
    nb_images,
    date_last,
    max_date_last,
    count_images,
    nb_categories,
    count_categories
  FROM piwigo_categories c
    INNER JOIN piwigo_user_cache_categories ucc
    ON id = cat_id
    AND user_id = 2
  WHERE id_uppercat = 889
      
  ORDER BY `rank` in /home/trainseu/www/galerie/piwigo/include/dblayer/functions_mysqli.inc.php on line 847

Fatal error: Uncaught Error: Call to a member function fetch_assoc() on boolean in /home/trainseu/www/galerie/piwigo/include/dblayer/functions_mysqli.inc.php:211 Stack trace: #0 /home/trainseu/www/galerie/piwigo/include/category_cats.inc.php(61): pwg_db_fetch_assoc(false) #1 /home/trainseu/www/galerie/piwigo/index.php(301): include('/home/trainseu/...') #2 {main} thrown in /home/trainseu/www/galerie/piwigo/include/dblayer/functions_mysqli.inc.php on line 211


Warning:  [mysql error 2006] MySQL server has gone away

REPLACE INTO piwigo_sessions
  (id,data,expiration)
  VALUES('038Bd4f278db789cd4b60238a82cf9a5c873','pwg_lang_switch|s:5:\"uk_UA\";pwg_device|s:7:\"desktop\";pwg_mobile_theme|b:0;',now())
; in /home/trainseu/www/galerie/piwigo/include/dblayer/functions_mysqli.inc.php on line 847