Fetch in node receiving status code 464 but working in browser

I'm a requesting a url with fetch in my node app and the response status is 464 (without responseText and without any error message). But I could't find any info about that.
Also if I request the same url with my browser (Chrome) then it works fine (no need to send any cookies or auth, it works in incognito window too)

What could be causing this?

EDIT: seems to be a problem with AWS Load Balancer, my problem is exactly this:https://forums.aws.amazon.com/message.jspa?messageID=964799
But there's no solution in that post, so maybe could be helpful to put it here if someone knows the problem (I'm suspecting is related with HTTP 2.0 but not sure, could it be?)

Response Header in Node is:Server=awselb/2.0Content-Length=0HttpCode=464

But in Chrome:server: nginx/1.18.0