JsonSerialize method not compatible

[ideal1sm]

Hello, today I installed the package and got an error

Declaration of Benjacho\BelongsToManyField\BelongsToManyField::jsonSerialize() must be compatible with Laravel\Nova\Fields\Field::jsonSerialize(): array

I solved this problem by adding to the jsonSerialize method of the BelongsToManyField class, return type of array

public function jsonSerialize(): array

[DzonyBB]

Yes, the error is gone, but the problem is not solved. Now there is no error, but it does not display any data. Help me set it up, thank you.