Strangely, if I open the developer console to figure out what's going on, the link loads reliably! The problem seems only to affect Firefox, and I'm using version 45.0.2 - though this has been an issue for a while so I don't think it's tied to the version. Seems to affect all purl.obolibrary class IRIs.
which version of Firefox are you using?
I tested my computer Firefox and did not find an error message.
Also, I tested Chrome, and it worked fine.
Oliver
Steps to repeat:
The problem also occurs if you try to access http://www.ontobee.org/ontology/PO?iri=http://purl.obolibrary.org/obo/PO_0000025 directly
Strangely, if I open the developer console to figure out what's going on, the link loads reliably! The problem seems only to affect Firefox, and I'm using version 45.0.2 - though this has been an issue for a while so I don't think it's tied to the version. Seems to affect all purl.obolibrary class IRIs.