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 ('578eb5d8ab2f45bef1b16c3f6832a96e', -1, 1730418249, 1730418249, '03946bc1', -1280, 0, 0)

Line : 195
File : sessions.php