To avoid CORS errors, following configs needs to be added to fully CORS-enable an Apache web server in <Directory>, <Location>, <Files>, <VirtualHost> of /etc/httpd/conf/httpd.conf or .htaccess

Header set Access-Control-Allow-Origin "*"
Header set Access-Control-Allow-Headers "*"
Header set Access-Control-Allow-Methods "*"

To ensure that your changes are correct, strongly recommended that you use

apachectl -t

to checck your configuration changes for errors. After this passes, you may need to reload Apache to make sure your changes are applied by running the command

sudo service httpd restart

To test if your server has no issue associated with CORS, please visit