[Hummingbird] Hummingbird can't combine CSS and JS files

Hi There,

From the pingdom test result, our site shows 142 requests. The CSS and JS haven't combined successfully. Here's the test link: https://tools.pingdom.com/#!/cuX6JQ/https://onlydinosaurs.com/features/walking-dinosaur-costume/

Our website is https://onlydinosaurs.com/. The above test page is https://onlydinosaurs.com/features/walking-dinosaur-costume/.
Here's screenshot link: https://prnt.sc/k6yjnu https://prnt.sc/k6yjd4

Can you please advice how to fix?
We appreciate your help. And thanks in advance,