Laravel custom error message returns global message

I'm testing a custom validation error message in Laravel 7.0. When I don't add an email address the message has to be: The data was not complete. but what I get is: The given data was invalid.

The request:

<?php

namespace App\Http\Requests;

use Illuminate\Foundation\Http\FormRequest;

class CreateMemberRequestRequest extends FormRequest
{
    /**
     * Determine if the user is authorized to make this request.
     *
     * @return bool
     */
    public function authorize()
    {
        return true;
    }

    /**
     * Get the validation rules that apply to the request.
     *
     * @return array
     */
    public function rules()
    {
        return [
            'email' => 'required|email',
            'name', 'first_name',
        ];
    }

    /**
     * Get the error messages for the defined validation rules.
     *
     * @return array
     */
    public function messages()
    {
        return [
            'required' => 'The data was not complete',
            'email.email' => 'This is not a valid email address',
        ];
    }

    /**
     *  Filters to be applied to the input.
     *
     * @return array
     */
    public function filters()
    {
        return [
            'email' => 'trim|lowercase',
            'name' => 'trim|capitalize|escape'
        ];
    }
}

The controller function: public function __invoke(CreateMemberRequestRequest $request)

Please help me out!