The expression return $this->container-...'), compact('factory')) also could return the type callable which is incompatible with the documented return type Illuminate\Validation\Validator.
If this is a false-positive, you can also ignore this issue in your code via the ignore-call annotation
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/** @scrutinizer ignore-call */
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$data = $this->json->all();
This check looks for calls to methods that do not seem to exist on a given type.
It looks for the method on the type itself as well as in inherited classes or
implemented interfaces.
This is most likely a typographical error or the method has been renamed.
It seems like $this->container->call(array($this, 'rules')) can also be of type callable; however, parameter $rules of Illuminate\Validation\Factory::make() does only seem to accept array, maybe add an additional type check?
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Ignorable by Annotation
)
If this is a false-positive, you can also ignore this issue in your code via the ignore-type annotation