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 ('279e151a9c8a026b64f1cfd797e0ed13', -1, 1714008886, 1714008886, '03164609', 6, 0, 0)

Line : 187
File : sessions.php