A error occurs: No method "getName()" found in class "Doctrine\ORM\PersistentCollection"

[divined]

/**
* @solr\Field(type="strings", getter="getName")
*
* @Orm\ManyToMany(targetEntity="App\Entity\Vocabulary\Classificator")
* @Orm\JoinTable(name="object_classificator_district",
* joinColumns={@Orm\JoinColumn(name="object_id", referencedColumnName="id")},
* inverseJoinColumns={@Orm\JoinColumn(name="classificator_id", referencedColumnName="id")}
* )
*/
private $districts;

And I get the following error during population:
A error occurs: No method "getName()" found in class "Doctrine\ORM\PersistentCollection"

How to index ManyToMany in Symfony 4?

[jadelrab]

I've just made a pull request #202 to fix a similar issue with one to many .. you can check if it works with your issue too ?