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 ('b95f8f08904d192c47d9e45feac6b43a', -1, 1713486421, 1713486421, '0d3a2717', -10, 0, 0)

Line : 187
File : sessions.php