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 ('4e276b4fd463ec01aff7c8a14b19e5d7', -1, 1638316339, 1638316339, '035c1c34', -11, 0, 0)

Line : 187
File : sessions.php