title: Yii2 ActiveForm validation error on Kartik's FileInput widget
body: <p>I have an ActiveForm with Kartik's FileInput widget. It is a type of Edit Form.
  I am fetching db data in it along with images.</p>
  
  <p>Case 1 - If Image is already added, it is showing large-image field as required whenever I click on update button.<br/>Case 2 - If I Choose new image, it is working fine.</p>
  
  <p>How can I set some value for FileInput for existing images to make it not empty/valid.
  I want some solution for case1. Each time its asking for new image to update any changes.
  Please help me to fix this.</p>
  
  <p>You can refer following image -
  <br/> <a href="https://i.stack.imgur.com/wzdhq.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/wzdhq.png" alt="enter image description here"></a></p>