phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('1450247d83339ffa0903115d7d6eb6ee', -1, 1752802700, 1752802700, '126109aa', -9, 0, 0)

Line : 189
File : sessions.php