title: JDK directory is not set or invalid (unity)?
body: <p>I am now creating a keystore for my game (in unity) but when I press the add key button, an error pops up</p>
  
  <blockquote>
    <p>Java Development Kit (JDK) directory is not set or invalid. Please, fix it in Preferences -> External Tools
    UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr) (at /Users/builduser/buildslave/unity/build/Modules/IMGUI/GUIUtility.cs:187)</p>
  </blockquote>
  
  <p>I installed the JDK and checked the path of it in the terminal using the command <code>/usr/libexec/java_home</code>, then it shows me that the path of the JDK is <code>/Library/Java/JavaVirtualMachines/jdk-14.0.1.jdk/Contents/Home</code>.</p>
  
  <p>I copy and paste it in the JDK path in unity but the error still pops up.
  I actually checked the JavaVirtualMachines in my computer's library but there's nothing in it. </p>
  
  <p>How can I solve this problem? Any help is greatly appreciated.</p>