Export fails if pin description is null

[ArtBIT]

I tried exporting my collection and the script resulted in an error:

VM800:177 Uncaught TypeError: Cannot read properties of null (reading 'replace')
    at escapeHtml (<anonymous>:177:19)
    at <anonymous>:199:186
    at Array.forEach (<anonymous>)
    at done (<anonymous>:198:14)
    at parseFeed (<anonymous>:136:7)
    at xhr.onload (<anonymous>:147:9)

After some debugging, it turned out one of my pins had null description.