First of all, don't panic
Fix SSL_ERROR_NO_CYPHER_OVERLAP error in Firefox
While Google Chrome remains the most popular web browser, Mozilla Firefox is a good alternative. Firefox has many standalone features that make it a strong competitor to Chrome, from built-in screen recording to a text-only reading mode. So if you’re having trouble with Chrome, Firefox is a great alternative to switch to.
Unfortunately, this doesn’t mean that Firefox is immune to bugs. For example, if you see an ssl_error_no_cypher_overlap error in Firefox, then you’re dealing with an issue with SSL security in your browser. To help you fix the problem, here’s what to do.
The ssl_error_no_cypher_overlap error message appears in Firefox when a website you visit has an older security certificate. The browser encrypts every connection between you and a site you visit to prevent hackers from monitoring or hijacking the connection.