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 ('41b5919a9252714e62e7a321a7eda7f3', -1, 1714011013, 1714011013, '03104c2b', 0, 0, 0)

Line : 187
File : sessions.php