This is temporarily unavailable and awaiting a re-release. I'm monitoring the progress of this issue internally and can provide an update once the release is made public. In the meantime, if you're needing to debug via Firefox, here is an article to get you started on debugging through the console, etc.
@Alstrup If you would like to use the Firefox version of the tealium tools, the latest version can be found here.
To install this locally, follow this guide for Mozilla.