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 ('7f0d24cbfc9b3355b50b0529f1cfaa05', -1, 1713956997, 1713956997, '0387b7bb', 2, 0, 0)

Line : 187
File : sessions.php