title: Flutter App Running Error: Dart can not be opened, Developer can not be verified after upgrading to Catalina
body: <p>I was using the latest version of <code>Android Studio IDE</code> for creating <code>flutter</code> apps. But when I upgraded from Mojave to Catalina and tried to open my <code>flutter</code> code on IDE it gave me an error saying: </p>
  
  <blockquote>
    <p>Dart can not be opened because the Developer can not be verified</p>
  </blockquote>
  
  <p>What is the reason behind the error and how can I solve the issue?</p>
  
  <p>Do I have to install flutter and relative development tools from scratch again or is there any other way to resolve the issue?</p>
  
  <p><a href="https://i.stack.imgur.com/xhHGY.png" rel="noreferrer"><img src="https://i.stack.imgur.com/xhHGY.png" alt="enter image description here"></a></p>