HERON error on Get REST Topography Component

Hi!

been working with heron for a while now and had a whole workflow for working with a topography up and running. But it seems there`s an issue with the boundary input in the Get REST Topography.
the error is: Solution exception:Value cannot be null. (Parameter ‘path1’)
One week ago the script was working fine so I have no idea what it might be. The boundary however works with other components. Script enclosed

heron_clean.gh (10.7 KB)