Programatic deployment of multiple instances of a verticle / module in Groovy requires a config

[jhanzair]

If a groovy verticle tries to deploy multiple instances of a module or verticle, for example:

container.deployVerticle("server.groovy", 4);

vertx returns:

java.lang.RuntimeException: java.lang.reflect.InvocationTargetException

The solution is to deploy the verticles or modules and pass a config, even if its empty, i. e.:

container.deployVerticle("server.groovy", new HashMap(), 4);

This workaround was suggested by Tim Fox in this vert.x google group post, which discusses the problem.

[LostInBrittany]

It should be solved