Vault File Uploader download issue

Hello,
I am having a problem where when trying to use the download option in the javascript file uploader. the main issue is download icon is not visible in the wizard. please let me know what is the issue.

Pleas,e make surte that you correctly defined and configured the target and the donloadURL properties of the dhtmlxVault:
https://snippet.dhtmlx.com/n8pj7aar
If the problem still occurs for you pleas,e provide a complete demo or a demo link, where the porblem can be reconstructed.