I’ll admit that I don’t fully understand all of the errors here, but I think the general issue has to do with a change we made to the NGINX config which was incompatible with how browser-sync proxies requests.
We’ve released a new Local Beta version as well as a new version of Instant Reload that should fix things:
If you have time, I’d love for you to test to see if you’re able to reliably use Instant Reload. If you’re not wanting to try out the Beta, we’ll likely be releasing these changes to stable in the future.