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 ('1ad88f9919eed46eea3fef326a0ee0cb', -1, 1714038285, 1714038285, '03812737', 3, 0, 0)

Line : 187
File : sessions.php