Your issue isn't really clear.
If this is something that only prevents your SEO company from doing its work for you, consider to find another SEO company (if you feel you need one).
If, however, this only is a warning it depends on how serious it is. Don't you often get complains about your site being too slow? Does your company find the speed acceptable? Then it's surely an option to do nothing.
But if your company finds it must attack this issue, your must either optimise your code or redesign your site. If specialised node.js forums aren't sufficient help to get it done, you'll have to hire some expert. You can't expect serious help on a general forum like this.
ABOUT THIS ISSUE
This issue is reported by a SEO company.
Any experts pls help
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