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 ('631d7a86b8d8c1e7076f9dced7df41bf', -1, 1714555104, 1714555104, '030f05b7', 20, 0)

Line : 158
File : sessions.php