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 ('1092f69db0132721f64569d9ec9c5eca', -1, 1730416720, 1730416720, '0d3b7bb6', 14, 0, 0)

Line : 195
File : sessions.php