Readd simple exception handler

src/main/java/net/frozenorb/apiv3/APIv3.java

@@ -240,6 +240,7 @@ public final class APIv3 extends AbstractVerticle {
         http.route().handler(new ActorAttributeHandler());
         http.route().handler(new MetricsHandler());
         http.route().handler(new AuthorizationHandler());
+        http.exceptionHandler(Throwable::printStackTrace);
 
         // TODO: The commented out routes