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 ('bb1765aa5f39c6025c2f6facfd144f0e', -1, 1638699491, 1638699491, '12d478c3', -11, 0, 0)

Line : 187
File : sessions.php