Opening Tag URI with Chrome Custom Tabs "ActivityNotFoundException: No Activity found to handle Intent"

This is a general behavior of android. If the URI you are launching cannot be parsed by any individual app, then you need to handle that error gracefully. There is nothing you can do in this condition as it depends on whether or not the user has an app that can actually interpret that URI.

You need to handle that Exception. It is not a library problem. Also as chrome custom tabs, they are probably expecting a webpage link, not that kind of link. In fact, probably the only app that would probably be able to interpret that URI would be the github app.

Standard android behavior is to crash when you try to launch an intent for an activity that no app can handle.

You may be able to leverage PackageManager APIs to detect whether or not someone can handle that intent.