RSS Feed broken since migration to other host

Hi,

i moved my site (https://www.vindcasino.nl) to a new domain. Everything worked except the admin backend so i added this code line to wp-config:

define(‘CONCATENATE_SCRIPTS’, false);

this restored the admin menu to normal but now my RSS feed is broken. I’ve changed to the default theme, disabled all plugins, even replaced the entire wordpress folder except for wp-content, leading me to believe the problem might be in the database (I used a query to replace all links to the old domain). The error that my feed returns is as follows:

XML-parse: XML or text declaration not at start of entity
Location: https://vindcasino.nl/feed/
Regelnummer 2, kolom 1:<?xml version=”1.0″ encoding=”UTF-8″?>