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

https://delta-wiki.win/index.php/What_Should_I_Check_Before_I_Add_a_Site_to_an_Allowlist%3F

ERR_BLOCKED_BY_CLIENT means a browser extension or setting is stopping a webpage from loading. To fix it fast, try opening the page in private mode to see if it works