phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO docttorrdiscluc_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('f81aebe89df71f0ebdf63e458c72aa70', -1, 1590407900, 1590407900, '22e83ed1', 0, 0, 0)

Line : 190
File : sessions.php