title: Illegal argument for datetime pattern in App Inventor 2
body: <p>I'm using a smartphone to save daily reports to database (Mysql), using App Inventor 2.
  When i try my Apps using all type of Samsung Smartphone, it shows Error like this.<a href="https://i.stack.imgur.com/cyzPe.jpg" rel="nofollow noreferrer">Samsung notification Error</a></p>
  
  <p>This is the notification Error : </p>
  
  <p>"Sorry to be so picky Illegal argument for pattern in Clock.FormatDateTime. <strong>Acceptable patterns are empty string, MM/dd/YYYY HH:mm:ss a, or MMM d, yyyy HH:mm.</strong> The empty string will provide the default format, which is "MMM d, yyyy HH:mm:ss a" for FormatDateTime, "MMM d, yyyy" for FormatDate. To see all possible pattern, see docs.oracle.com/javase/7/docs/api/java/text/… END APPLICATION" </p>
  
  <p>But when I use Xiaomi A1, no error notification appears. And the data can smoothly insert to Database.
  This is the datetime pattern that i use in Block script.
  <a href="https://i.stack.imgur.com/svC3R.jpg" rel="nofollow noreferrer">Block Pattern Script</a></p>
  
  <p><a href="https://i.stack.imgur.com/TJRX6.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/TJRX6.jpg" alt="enter image description here"></a></p>
  
  <p>I'm using "<strong>yyyy-MM-dd HH:mm:ss</strong>" clock pattern in App Inventor 2.</p>