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

https://smart-wiki.win/index.php/What%E2%80%99s_the_difference_between_allowlist_and_whitelist_in_extension_settings%3F

ERR_BLOCKED_BY_CLIENT means a browser extension or setting is stopping a webpage from loading. The easiest way to check is to open the page in private or incognito mode