Sergio

I had the same problem using `graphviz-5.0.0-2`

@gabriel-tessier ```python HOME_PATH="." graph_attr = { "fontsize": "20", "pad": "0.3", } cluster_attr = {"fontsize": "14"} node_attr = {"fontsize": "14"} with Diagram( name="Arch", show=False, filename=f"{HOME_PATH}/arch/smartpill-arch", graph_attr=graph_attr, node_attr=node_attr, ): gpl = RDSMariadbInstance("source")...

I think `diagrams` isn't resolving relative path in `Custom`, so I fixed my diagram using absolute path as: ```python from pathlib import Path HOME_PATH = f"{Path(__file__).parent.resolve()}" ```

Hi Tran, What is your OS?

what is your mininet version? > do you have ova file your project, can you share to me No, last time that `ddosdn` was update was run locally when mininet...

Im going to try reproduce your error.

`locahost:5000/control` this service was done by @GastonLopez and I think he didn't share their project.

your `openvswitch-switch` service is enable ? you can check using ```sh sudo systemctl status openvswitch-switch ```

I think openvsiwitch-switch is not enabled try ```sh sudo systemctl restart openvswitch-switch ```

@viettd14 if you want to contact to @GastonLopez try to do via [linkedin](https://www.linkedin.com/in/gast%C3%B3n-l%C3%B3pez-968994169/)