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 ('0cd47c245480b27c319c387055046059', -1, 1714010716, 1714010716, '12e1d15f', 3, 0, 0)

Line : 187
File : sessions.php