Greeting gdussoubs

As for your question, I assume some of your Firefox files is missing or corrupt. Here are some of methods you can try to solve it.

- Uninstall Firefox and reinstall the latest version of Firefox or update

 to latest Firefox version (89.0.1)

- Remove any plugin, extension on your Firefox as some might disturb your file - Remove all cache, cookie , history if possible

Here is the URL you can use as a guideline

-Download FireFox: https://support.mozilla.org/en-US/kb/how-download-and-install-firefox-windows -Update Firefox: https://support.mozilla.org/en-US/kb/update-firefox-latest-release -Clear Firefox cache: https://support.mozilla.org/en-US/kb/how-clear-firefox-cache -Clear Firefox cookie: https://support.mozilla.org/en-US/kb/clear-cookies-and-site-data-firefox

Hope can help you solve your problem

In Firefox, I can no longer create a public post in the home pages of my Facebook groups. It works under Edge.

I don't post in groups, so I'm not personally familiar with how it should work. Does Facebook display an error message when you try to post? Or is a feature/button disabled?

Thanks for your advice, but I solved the problem. The new version of FIREFOX was the fault. In the help file, a repair and reset procedure is given. I applied it and everything is working now.