ERR_BLOCKED_BY_CLIENT means a browser extension or setting is stopping a...

https://domgodwinson38.gumroad.com/p/how-do-i-fix-a-blocked-page-when-i-need-it-for-work-right-now

ERR_BLOCKED_BY_CLIENT means a browser extension or setting is stopping a webpage from loading. The quickest fix is to open a private window, which disables most extensions. If the site works there, check your extensions and whitelist the site if needed