Installing Firefox in Whonix

Hi, I have to come back with some clarification and further questions.

I made an error and typed the comand abow in the gateway not the worksation.

I just presumed that was the way to do it.

Any way I noticed that it did install in the gateway. However objusly its no use having it there.

So I tried the same comand in workstation.

And get this mesage right away (ofter typing the pasword):
Unabel to locate package firefox-esr

Dose any one have the solution for this? It would be grate if some one could tell me how to fix this. Objusly the package whas found and instald when I did typing the same comand in gateway.

So what sould I do to download and install Firefox in workstation?

I have reason for whnating Firefox in whonix. I have further qustion on that as well. That I hope can be sorted out later. But thats an topic for an other thread I think. And Im trying to keep it fokused on this sigel issue for now.

Again if some one could give me som guidens I would be gratefull.

apologys for any gramtic faoult.