Loading schemas from nested references fails

[reitzig]

I have a schema of the following structure:

{
  "$schema"    : "http://json-schema.org/draft-04/schema#",
  "properties" : {
        "someProp": {
          "$ref": "https://my.server/path"
        }
  }
}

The referenced schema contains more such references. One of them leads to this error:

[ {
  "level" : "fatal",
  "message" : "unable to dereference URI \"otherpath#\"",
  "uri" : "https://my.server/otherpath#",
  "exceptionMessage" : "java.lang.RuntimeException: Could not generate DH keypair",
  "info" : "other messages follow (if any)"
} ]

I have confirmed that the server isn't the issue: if I link only a "flat" (=no further references) schema from the same server, no error appears. Thus, it seems that the application does not handle nested references correctly.

FWIW, when I use java-json-tools/json-schema-validator locally, this error does not appear.