This exception is thrown when the MicroProfile Rest Client implementation attempts to build a client using an invalid interface. Interfaces are considered invalid (1) if it contains a method with more than one HTTP method annotations or (2) if the combined type-level/method-level URI path contains an unresolved URI template or (3) if an interface method contains a @PathParam annotation that refers to a URI template that is not defined in any @Path annotations on the method or interface.