验证复选框不起作用

Question

我有以下HTML代码，

<div class="col-md-8 address-proof">
    <div class="form-check form-check-inline">
        {{ Form::checkbox('Proof[]', 1, true, array('class' => 'form-check-input')) }}
        <label class="form-check-label" for="Passport">Passport</label>
    </div>
    <div class="form-check form-check-inline conditional"  data-condition="['yes'].includes(HaveAadharCard)">
        {{ Form::checkbox('Proof[]', 2, false, array('class' => 'form-check-input')) }}
        <label class="form-check-label" for="Adhaar">Adhaar</label>
    </div>
    <div class="form-check form-check-inline">
        {{ Form::checkbox('Proof[]', 3, false, array('class' => 'form-check-input','id'=>'DrivingL')) }}
        <label class="form-check-label" for="DL">DL </label>
    </div>
    <div class="form-check form-check-inline">
        {{ Form::checkbox('Proof[]', 4, false, array('class' => 'form-check-input')) }}
        <label class="form-check-label" for="Voter_Id">Voter ID</label>
    </div>
    <div class="form-check form-check-inline">
        {{ Form::checkbox('Proof[]', 5, false, array('class' => 'form-check-input')) }}
        <label class="form-check-label" for="NREGA">NREGA</label>
    </div>
</div>

我有以下验证码，

$this->validate($request, [
    'title' => 'required',
    'body' => 'required',
     ...        
    'Proof' => 'required|min:2',    
]);

上面的代码不起作用，我想要至少两个必填复选框。

更新：

我必须添加

{{ Form::hidden('Proof', 0) }}

字段让它发挥作用。