Problem downloading Collection

[cjmyers]

The collection below of linked parts throws the error below when attempting to download SBOL.

Error
Error: sbol-10212: Strong Validation Error:
The name property of an Identified object is OPTIONAL and MAY contain a String.
Reference: SBOL Version 2.3.0 Section 7.4 on page 17
: https://synbiohub.org/user/douglasharper42/DMH/DMH_collection/1
Validation failed.
at java.then (/synbiohub/lib/conversion/n3-to-sbol.js:27:31)
at process.internalTickCallback (internal/process/next_tick.js:77:7)