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 ('9ab65fb8d4d872dc2eb3f958241fddef', -1, 1714621146, 1714621146, '038d6478', -52, 0, 0)

Line : 187
File : sessions.php