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 ('7f12fa9aa6686bc02d489482b6647d10', -1, 1713918526, 1713918526, '03859357', 0, 0, 0)

Line : 187
File : sessions.php