Could not generate DH keypair #2872

Java::JavaLang::RuntimeException: Could not generate DH keypair
    from sun.security.ssl.Handshaker.checkThrown(Handshaker.java:1362)
    from sun.security.ssl.SSLEngineImpl.checkTaskThrown(SSLEngineImpl.java:529)
    from sun.security.ssl.SSLEngineImpl.readNetRecord(SSLEngineImpl.java:807)
    from sun.security.ssl.SSLEngineImpl.unwrap(SSLEngineImpl.java:775)
    from javax.net.ssl.SSLEngine.unwrap(SSLEngine.java:624)
    from org.jruby.ext.openssl.SSLSocket.readAndUnwrap(SSLSocket.java:550)
    from org.jruby.ext.openssl.SSLSocket.doHandshake(SSLSocket.java:430)
    from org.jruby.ext.openssl.SSLSocket.connectCommon(SSLSocket.java:203)
    from org.jruby.ext.openssl.SSLSocket.connect(SSLSocket.java:180)
    from org.jruby.ext.openssl.SSLSocket$INVOKER$i$0$0$connect.call(SSLSocket$INVOKER$i$0$0$connect.gen)
    from org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:134)
    from org.jruby.ast.CallNoArgNode.interpret(CallNoArgNode.java:60)
    from org.jruby.ast.NewlineNode.interpret(NewlineNode.java:105)
    from org.jruby.evaluator.ASTInterpreter.INTERPRET_BLOCK(ASTInterpreter.java:112)
    from org.jruby.runtime.Interpreted19Block.evalBlockBody(Interpreted19Block.java:206)
    from org.jruby.runtime.Interpreted19Block.yield(Interpreted19Block.java:157)
... 197 levels...
    from org.jruby.ast.BlockNode.interpret(BlockNode.java:71)
    from org.jruby.evaluator.ASTInterpreter.INTERPRET_METHOD(ASTInterpreter.java:74)
    from org.jruby.internal.runtime.methods.InterpretedMethod.call(InterpretedMethod.java:182)
    from org.jruby.internal.runtime.methods.DefaultMethod.call(DefaultMethod.java:203)
    from org.jruby.runtime.callsite.CachingCallSite.cacheAndCall(CachingCallSite.java:326)
    from org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:170)
    from Users..$_dot_rbenv.versions.jruby_minus_1_dot_7_dot_19.bin.irb.__file__(.rbenv/versions/jruby-1.7.19/bin/irb:13)
    from Users..$_dot_rbenv.versions.jruby_minus_1_dot_7_dot_19.bin.irb.load(.rbenv/versions/jruby-1.7.19/bin/irb)
    from org.jruby.Ruby.runScript(Ruby.java:866)
    from org.jruby.Ruby.runScript(Ruby.java:859)
    from org.jruby.Ruby.runNormally(Ruby.java:728)
    from org.jruby.Ruby.runFromMain(Ruby.java:577)
    from org.jruby.Main.doRunFromMain(Main.java:395)
    from org.jruby.Main.internalRun(Main.java:290)
    from org.jruby.Main.run(Main.java:217)
    from org.jruby.Main.main(Main.java:197)