Warning:  [mysql error 1017] Can't find file: 'piw_user_cache' (errno: 2 - No such file or directory)

SELECT
    ui.*,
    uc.*,
    t.name AS theme_name
  FROM piw_user_infos AS ui
    LEFT JOIN piw_user_cache AS uc ON ui.user_id = uc.user_id
    LEFT JOIN piw_themes AS t ON t.id = ui.theme
  WHERE ui.user_id = 2
; in /home/myhost/public_html/piwigo/include/dblayer/functions_mysqli.inc.php on line 832


Fatal error: Call to a member function fetch_assoc() on boolean in /home/myhost/public_html/piwigo/include/dblayer/functions_mysqli.inc.php on line 213