Go to Structure > Feed importers > Yale Bedework Calendar
From the Edit tab do this:
Next click on the Tamper tab
Bedework updates automatically every hour, but if you don’t want to wait, go to Content > Import, click on the Yale Bedework calendar link, then click on the Import button.
Once this is done, as long as the Image field in the view has the Link image option set to Nothing and not Content, WAVE will no longer throw an error.