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 ('1aa6fa247843c5a28b611a4ab9e26dae', -1, 1713491400, 1713491400, '03919ab2', -11, 0, 0)

Line : 187
File : sessions.php