Unknow Exception

[dieffrei]

com.sforce.cd.apexUnit.ApexUnitRunner.main()] ERROR com.sforce.cd.apexUnit.ApexUnitUtils - Connection Exception encountered The connection exception description says : null Object dump for the Connection object:
[com.sforce.cd.apexUnit.ApexUnitRunner.main()] INFO com.sforce.cd.apexUnit.ApexUnitUtils - Shutting down ApexUnit
java.lang.Exception: Stack trace
at java.lang.Thread.dumpStack(Thread.java:1329)
at com.sforce.cd.apexUnit.ApexUnitUtils.shutDownWithErrMsg(ApexUnitUtils.java:48)
at com.sforce.cd.apexUnit.ApexUnitUtils.shutDownWithDebugLog(ApexUnitUtils.java:33)
at com.sforce.cd.apexUnit.client.connection.ConnectionHandler.createConnection(ConnectionHandler.java:113)
at com.sforce.cd.apexUnit.client.connection.ConnectionHandler.getConnection(ConnectionHandler.java:164)
at com.sforce.cd.apexUnit.client.testEngine.TestExecutor.testExecutionFlow(TestExecutor.java:36)
at com.sforce.cd.apexUnit.ApexUnitRunner.main(ApexUnitRunner.java:74)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.codehaus.mojo.exec.ExecJavaMojo$1.run(ExecJavaMojo.java:297)
at java.lang.Thread.run(Thread.java:745)

[vamshi-sfdc]

@dieffrei can you please share more details on how to reproduce this issue?