It's not clear whether this issue happens due to network or browser problem but when I try to access "http://purl.obolibrary.org/obo/NCIT_C3875", Ontobee does not show anything for a while but later shows this error message.
p.s. I don't experience this issue on other NCIT entities. Accessing some upper-level entities often takes some time but Ontobee shows the page properly in the end.
It's not clear whether this issue happens due to network or browser problem but when I try to access "http://purl.obolibrary.org/obo/NCIT_C3875", Ontobee does not show anything for a while but later shows this error message.
The similar issue arises when I also try to access http://purl.obolibrary.org/obo/NCIT_C8604.
p.s. I don't experience this issue on other NCIT entities. Accessing some upper-level entities often takes some time but Ontobee shows the page properly in the end.