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) VALUES ('56e3e3ae7b68e93a9efec4db3987c906', -1, 1714770369, 1714770369, '12bd027a', -9, 0)

Line : 158
File : sessions.php