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 ('5a4620a1f8cde83fd5561188cfd95d08', -1, 1713570345, 1713570345, '12dafe7a', -1, 0, 0)

Line : 187
File : sessions.php