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) VALUES ('f9dcbdd2b6bf20c9e213b9f4cfe55fdc', -1, 1714763051, 1714763051, '12dd9a97', 7, 0)

Line : 158
File : sessions.php