Dev environment fails with Error: read ECONNRESET

[timtomch]

Hi there

I'm failing to run gulp for a new Primo dev environment setup, even though I'm able to run it without problem for another library.

I have a working dev environment for one library, with which I'm able to run Primo locally with no issues, generate packages and upload them to Alma.

But when I try to set up the exact same thing for another library (using a fresh copy of the primo-explore-devenv repository and setting the proxy config to the sandbox for that library), I am unable to get it to work. Only part of the UI (sometimes nothing at all) loads in the browser before the following error shows up in the terminal where I'm running gulp:

Error: read ECONNRESET
    at TLSWrap.onStreamRead (node:internal/stream_base_commons:217:20)
    at TLSWrap.callbackTrampoline (node:internal/async_hooks:130:17)

Is there a timeout setting in the sandbox that's causing this issue?

Since this is a new Alma/Primo install, there are no customization packages in use, so I'm using a fresh copy of the primo-explore-package in primo-explore/custom which I've renamed according to an existing view on the sandbox.

What am I doing wrong?
Thanks for your help

[timtomch]

Interestingly enough, the issue only appears if I'm using the sandbox URL in the proxy config. If I replace it with the live instance URL, things work fine...