Problem installing R packages in order to install AFNI


New Member
I recently downloaded ubuntu/linux onto windows in order to install the neuroimaging analysis software AFNI. One of the steps is to download/install R packages. I am stuck here (see photo). I tried posting on the AFNI message board but my profile has not been approved for several days. Here is the link to the instructions:

The step I'm stuck at is the 3rd step under "Install R." If anyone can offer some insight so someone who knows little to nothing about coding (I am a neuroscience research assistant) it would be much appreciated. Thank you so much.


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