What does it mean? What is the error message?

What it means is what it says, firefox blocked the site and does not give me the choice of going there anyway. Where is not relevant to the question at hand. How do I get it to allow me to go there?

Hello there! It sounds like Firefox is blocking a site and not offering the option to proceed. No worries, we can definitely fix this. First, try clearing your browser's cache and cookies, as this often resolves such issues. If that doesn't work, you might want to check your browser's security settings. Head to the browser's settings, then click on "Privacy & Security." There, you can adjust your Enhanced Tracking Protection settings to allow the site in question. This should give you the freedom to visit the site without any hurdles. Give it a go and let me know if that helps! If you need further assistance, feel free to reach out.