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 ('8aaa9b7423d9aa51cdfa1b855df05ce2', -1, 1714369168, 1714369168, '0390f818', 7, 0)

Line : 158
File : sessions.php