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 ('7615f5a3cad3f69a4a07c35acbe5f24c', -1, 1714387917, 1714387917, '0390d491', 7, 0)

Line : 158
File : sessions.php