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 ('6154a4934529c36f5f204369d47a98f6', -1, 1713531522, 1713531522, '0387b7bb', -4, 0, 0)

Line : 187
File : sessions.php