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 ('dd9a0cfacf3a5373f9a3e9e2c468f83c', -1, 1714331736, 1714331736, '0386765f', -4, 0)

Line : 158
File : sessions.php