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 ('6f5192c7a243c9b808755a9f99e4928c', -1, 1714043433, 1714043433, '12bcf152', 5, 0, 0)

Line : 187
File : sessions.php