java.lang.NullPointerException: This exception has no message.

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at org.openstack4j.openstack.identity.internal.DefaultEndpointURLResolver.resolveV3(
at org.openstack4j.openstack.identity.internal.DefaultEndpointURLResolver.findURL(
at org.openstack4j.openstack.internal.OSClientSession.getEndpoint(
at org.openstack4j.core.transport.HttpRequest$
at org.openstack4j.openstack.internal.BaseOpenStackService$Invocation.executeWithResponse(
at hello.test.FirstClass.main(

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