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 ('8e08a577fb7700f87bcea2bc7ed3c624', -1, 1730419697, 1730419697, '030ef429', -1280, 0, 0)

Line : 195
File : sessions.php