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 ('ef1b25693e88ffe8664c6c6d6d9be704', -1, 1713488482, 1713488482, '12dc6af1', -8, 0, 0)

Line : 187
File : sessions.php