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 ('f46b70e1e95c9d38e3f9a54b5fd7e38a', -1, 1714621664, 1714621664, '340f3ba3', 6, 0)

Line : 158
File : sessions.php