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 ('dab8ccc53e8c3210f9e7ae36e67487ab', -1, 1638585346, 1638585346, '36e361db', 46, 0, 0)

Line : 187
File : sessions.php