I am getting this similar error (happy im not the only one)
I see it when running NPM start as an issue in the Metro Bundler
And also when trying to publish any package (one that worked fine last time and a whole new one from just expo init.
The messages i receive are:
Warning: could not reach exp.host.
We couldn’t reach some of our domains, this might cause issues on our website or services.
Please check your network configuration and try to access these domains in your browser.
Starting Metro Bundler.
Building iOS bundle
connect ECONNREFUSED 127.0.0.1:80