ER Diagramm displays every relationship twice

Hi there,

The **ER Diagram**-Plugin from Invoker does visualize all my Relationships twice.
The Loadingscreen even displays _Loading model definitions (18/9)_.

Here are two Screenshots.

This one is from **Invoker**

And this one if from [your Package](https://github.com/beyondcode/laravel-er-diagram-generator) (laravel-er-diagram-generator):

Have a nice weekend! 🌈

Start by reproducing the duplicate relationships in the Invoker ER Diagram plugin and compare its output with the linked laravel-er-diagram-generator package. Check the model-definition loading path, including the reported “18/9” count; done means each relationship appears once and the loading count matches the discovered definitions.

Written by the indexing model from the issue text.