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 ('1827c4a1659df51e00e24ba743d00c2a', -1, 1747513234, 1747513234, '0390670e', 2, 0, 0)

Line : 190
File : sessions.php