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 ('ac39721d01b7814996bb2977c4ae8954', -1, 1730432721, 1730432721, '12777a7d', -1, 0, 0)

Line : 195
File : sessions.php