Github user ansell commented on the issue:
https://github.com/apache/any23/pull/38
The key may be the TLS certificate used by json-ld.org, as that HTTP URL
redirects to an HTTPS URL. If you are using a Java version that doesn't have
TLS SNI (Server Name Indication) enabled (or has a bug in its SNI process), you
will get an expired certificate according to ssllabs.com:
https://www.ssllabs.com/ssltest/analyze.html?d=json%2dld.org&latest
What is your java version?
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