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 ('d0f5a5f306704dc7356b790e72ac581b', -1, 1632211470, 1632211470, '23accb57', -4, 0, 0)

Line : 187
File : sessions.php