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 ('c1df9cede63bf15c335b5a35d54b8420', -1, 1714010230, 1714010230, '0381f969', -1, 0, 0)

Line : 187
File : sessions.php