[Freesurfer] Freeview libpng warning

Hello FreeSurfer community,

I am having an issue with the icon graphics displaying properly in freeview (Linux virtual machine - Ubuntu). I receive the following warning when opening the application:

"libpng warning: Application built with libpng-1.2.7 but running with 1.6.25"

The newer version of libpng was downloaded as part of the Miniconda 2 package (which I need to run the MNE-Python pipeline). I've been unable to find a way to revert back to the older version of libpng. If anyone else has dealt with this compatibility issue before, suggestions on how to proceed would be very much appreciated!

Thank you in advance,

Kristen