deployment issue for Visual Studio VM image in Azure

This post on Medium gives the solution for Platform Image Not Found error on Azure. Basically this is a bug in Azure deployment, I guess. 

In short, download the resource template using "Download a template for automation" from our failed VM, search for the value which gives the error. Then run inside cloud shell:
az vm image list --all --sku vs-2019-comm-latest-win10-n

(or whichever image was giving the error.)

In the case of the medium post above, it was the version which had the error. Once the template was corrected and it was redeployed, the error was not seen.