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 ('baed3a7c20e2e56c54e9e880fffbacc1', -1, 1714018325, 1714018325, '0311064b', -10, 0, 0)

Line : 187
File : sessions.php