Multiple entityIDs return 500 error when clicking on them

[vrokyle]

Trying to search on multiple entity ID's (e.g., https://gw-astronomy.org/lists/shibboleth-sp ) for use in a cybersecurity exercise practicing looking up Sirtfi security POCs. The MET tool finds the entity ID, but when clicking on the entity ID, it gives a "500 something goes wrong" error instead of pulling up the published POCs from the metadata.
It threw this error with: https://gw-astronomy.org/lists/shibboleth-sp; https://idp.calpoly.edu/idp/shibboleth; https://idp.ndsu.edu/idp/shibboleth; https://idp.rice.edu/idp/shibboleth; urn:mace:incommon:nih.gov; urn:mace:incommon:uiuc.edu, and others.
It worked fine with:https://cilogon.org/shibboleth; https://sdauth.sciencedirect.com/