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 ('089a408b6e4a21b412edccd376e22224', -1, 1635439281, 1635439281, '03ece863', -4, 0, 0)

Line : 187
File : sessions.php