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 ('9c6de4d66db3099b7d9c19c4a69f66af', -1, 1747855505, 1747855505, '340e969b', 3, 0, 0)

Line : 190
File : sessions.php