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 ('9ab837c5e4d61b0b2db9a6c9051e5c0f', -1, 1714361514, 1714361514, '0395d5d1', 20, 0)

Line : 158
File : sessions.php