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 ('db24340d190a43ea318ddc4b394b12ba', -1, 1614693137, 1614693137, '36ec3adc', 10, 0, 0)

Line : 189
File : sessions.php