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 ('58a2ca3983903630616697216c3a99c4', -1, 1571727877, 1571727877, '64187ae4', -2, 0, 0)

Line : 187
File : sessions.php