Warning:  [mysql error 1053] Server shutdown in progress

SELECT
    author,
    COUNT(DISTINCT(id)) AS counter
  FROM piwigo_images AS i
    JOIN piwigo_image_category AS ic ON ic.image_id = i.id
  WHERE image_id IN (503,502,501,500,499,498,497,496,495,494,493,492,491,490,489,488,487)
    AND author IS NOT NULL
  GROUP BY author
; in /home/oisterfiui/www2/kuvat.pictures/include/dblayer/functions_mysqli.inc.php on line 847

Fatal error: Uncaught Error: Call to a member function fetch_assoc() on bool in /home/oisterfiui/www2/kuvat.pictures/include/dblayer/functions_mysqli.inc.php:913 Stack trace: #0 /home/oisterfiui/www2/kuvat.pictures/include/search_filters.inc.php(107): query2array('\nSELECT\n aut...') #1 /home/oisterfiui/www2/kuvat.pictures/index.php(177): include('/home/oisterfiu...') #2 {main} thrown in /home/oisterfiui/www2/kuvat.pictures/include/dblayer/functions_mysqli.inc.php on line 913


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

REPLACE INTO piwigo_sessions
  (id,data,expiration)
  VALUES('D8493d3ea807aa905ae7dfc31dec7bb84e91','pwg_show_metadata|b:1;pwg_referer_image_id|s:4:\"1070\";pwg_device|s:7:\"desktop\";pwg_index_deriv|s:6:\"square\";pwg_lang_switch|s:5:\"fi_FI\";',now())
; in /home/oisterfiui/www2/kuvat.pictures/include/dblayer/functions_mysqli.inc.php on line 847