Entries of collections with multi-word names cannot be created

[thekanbo]

Any collections with more than one word as the name ("Book Page"), where the handle and slug would be different (book_page & slug), cannot save a new entry. A 404 error is returned when posting the data to the API:

exception: "Symfony\Component\HttpKernel\Exception\NotFoundHttpException"
file: "/home/vagrant/Code/Efelle/fusioncms/vendor/laravel/framework/src/Illuminate/Foundation/Exceptions/Handler.php"
line: 202
message: "No query results for model [App\Models\Matrix]."