# Virtual graph incompatible constructor

**URL:** <https://community.stardog.com/t/virtual-graph-incompatible-constructor/302>\
**Category:** Bug\
**Created:** [May 9, 2017, 12:26am UTC](https://community.stardog.com/t/virtual-graph-incompatible-constructor/302 "2017-05-09T00:26:14Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![zachary.whitley](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.stardog.com/zachary.whitley/32/94_2.png) [@zachary.whitley](https://community.stardog.com/u/zachary.whitley)\
**Post date:** [May 9, 2017, 12:26am UTC](https://community.stardog.com/t/virtual-graph-incompatible-constructor/302/1 "2017-05-09T00:26:14Z")

</div>

I'm getting the following error when starting Stardog 5.0-beta

> ERROR 2017-05-08 20:22:43,620 [main] com.complexible.stardog.protocols.http.server.StardogHttpServiceLoader:createService(161): Unable to create an instance of HttpService class com.complexible.stardog.protocols.http.server.virtual.admin.VirtualGraphHttpService, missing compatible constructor

I'm guessing that it has something to do with using a community license and virtual graphs being an enterprise feature.

---

<div class="post-metadata">

**Author:** ![cburleson](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.stardog.com/cburleson/32/86_2.png) [@cburleson](https://community.stardog.com/u/cburleson)\
**Post date:** [May 9, 2017, 7:40pm UTC](https://community.stardog.com/t/virtual-graph-incompatible-constructor/302/2 "2017-05-09T19:40:51Z")

</div>

I got the same error on the startup of Stardog server 5.0-beta, but it does then also say "Stardog server is listening on all network interfaces. HTTP server available at [http://localhost:5820](http://localhost:5820)." I'm assuming also, for now, that it has something to do with using a community license.

---

<div class="post-metadata">

**Author:** ![stephen](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.stardog.com/stephen/32/27_2.png) [@stephen](https://community.stardog.com/u/stephen)\
**Post date:** [May 12, 2017, 7:13pm UTC](https://community.stardog.com/t/virtual-graph-incompatible-constructor/302/3 "2017-05-12T19:13:47Z")

</div>

Hi guys,

I have been able to pinpoint the cause of this issue, and it will be fixed in an upcoming release. Thanks for the report!