Can't install R Studio on Ubuntu 18.04?

Here is what I am trying to do:

sudo apt-get install gdebi-core
wget https://download2.rstudio.org/server/xenial/amd64/rstudio-server-1.3.1093-amd64.deb
sudo gdebi rstudio-server-1.3.1093-amd64.deb

And here is the error I get:

Traceback (most recent call last):
  File "/usr/bin/gdebi", line 38, in <module>
    from GDebi.GDebiCli import GDebiCli
  File "/usr/share/gdebi/GDebi/GDebiCli.py", line 36, in <module>
    from .DebPackage import DebPackage, DscSrcPackage
  File "/usr/share/gdebi/GDebi/DebPackage.py", line 24, in <module>
    import apt.debfile
  File "/usr/lib/python3/dist-packages/apt/debfile.py", line 23, in <module>
    import apt_inst
ModuleNotFoundError: No module named 'apt_inst'