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 ('40a3f9b99e2a2b0eb8b793273f00bee9', -1, 1711716523, 1711716523, '035b0b1e', -10, 0, 0)

Line : 187
File : sessions.php