This tutorial is going to show you how to fix:
Use your FTP or Hosting control panel:
Navigate to builder/elements folder.
Create a folder called sass:
Export button works now.
Feel free to check the detailed video tutorial below:JS Animated. How to deal with “Fatal error : Uncaught exception ‘UnexpectedValueException’ with message ‘RecursiveDirectoryIterator::__construct(elements/sass): failed to open dir: No such file or directory” error