google-pagespeed

I’m getting this message “Parallelize downloads across hostnames” when checking my WordPress site on GTmetrix > https://gtmetrix.com Here are the details > https://gtmetrix.com/parallelize-downloads-across-hostnames.html How do I fix that ?

I’m getting this message “Parallelize downloads across hostnames” when checking my WordPress site on GTmetrix > https://gtmetrix.com Here are the details > https://gtmetrix.com/parallelize-downloads-across-hostnames.html How do I fix that ?