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 ('e5fc1563b5c50d4ee7e5e5ed6791480a', -1, 1713557666, 1713557666, '12deb8a2', -4, 0, 0)

Line : 187
File : sessions.php