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 ('d1c929a2a5f5f55371b9154997c9bb3b', -1, 1713912494, 1713912494, '0392ddcc', 5, 0, 0)

Line : 187
File : sessions.php