Hi there @stevendumala
That file is a file generated by Hummingbird when JS assets are compressed & combined in the Asset Optimization feature. So there’s no need to add that file. ??
However, it may be that you have combined some 3rd-party assets into that file, which is triggering that recommendation at Pagespeed.
What you’d want to is open that file by clicking on it in the Pagespeed report. Then look at the filenames at the very top, in the /**handles:...**/
part
If you see any 3rd-party script names listed there, that means they’ve been combined in that file, and you’d have 2 options to help resolve the recommendation:
1. Leave that file combined the way it is, and add the source domain name(s) to Prefetch DNS Requests under Hummingbird > Advanced Tools > General
2. Or, toggle off the Combine option for that 3rd-party file in Asset Optimization so it loads on its own.
Either way, once done, clear all caches on the site and run the Pagespeed test again to see if the same file gets flagged in that recommendation.
Cheers!
Patrick