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 ('cb255de8f9c440e4e64741cb5be2eb07', -1, 1714632594, 1714632594, '12dac4b6', -9, 0)

Line : 158
File : sessions.php