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 ('1e1f096b4eb5139deb584cd8df6b9e6e', -1, 1638701869, 1638701869, '12d478c3', 0, 0, 0)

Line : 187
File : sessions.php