Add Existing Hard Disk Browser Not Showing VMDK File

System

ESXi-6.5.0-20170702001-standard

Problem

I have a VMDK file (as shown in the first picture) which I am trying to add as the primary hard disk for a new VM.

When I go to select a "existing hard disk" from the browser pop-up and select the Temp folder where the VMDK file is stored, nothing is showing up.

What could be the cause of this?