Usage of 立ち話もなんです in this sentence


I got this from an anime:-

> 立ち話もなんですから、こちらへどうぞ

The sub translates to:-

> Standing around there chatting is all very well, but please come this way

I don't understand how "立ち話もなんですから" can be interpreted as "standing around
there is all very well". How does "もなんです" modify the noun "立ち話"?

[[[Chatting]and[what]]declarative] doesn't really make sense.

