Fatal error: Duplicate entry '0' for key 2 query: INSERT INTO sessions (sid, uid, hostname, timestamp) VALUES ('59f032243d1c6acab52dbefb5e5720b0', 0, '54.234.13.175', 1542849283) in /srv/www/htdocs/a2jauthor/drupal/includes/database.mysql.inc on line 66