Thank you for the examples, but this one returns "TypeError: Cannot read properties of null (reading '1')"

What browser are you using? I'm using Chrome 93 on macOS 11.5.2 and it working for me.

Same error on both Chrome 93.0.4577.**/Win10 64bit and Chrome 93.0.4577**/Android 10

What do you see when you evaluate `window.location.href` in a new cell in this notebook?

This is fixed now 👍