dpkg problem using apt

[Glenn K0LNY]

Hi All,
I'm running Ubuntu 18 in a VmWare session on this computer, and I tried to install a package that I read from it's web page that it will install into Ubuntu with apt
sudo apt install gnuradio -y
And I get an error that reads like:
unable to acquire the dpkg front end lockIs another process using it?

I wonder if this version of Ubuntu no longer has it, in it's repository?
It comes from GNUradio.org
It is a bunch of SDR software and drivers.
Thanks for any thoughts.

Glenn
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