Deleting a SharePoint Online Subsite through Powershell and through web

How to delete a SharePoint Online Subsite through Powershell and through web.

Step 1: Please install the first msi from this link : https://github.com/pnp/PnP-PowerShell/releases/tag/3.9.1905.3

Step 2: After installing, run your powershell as administrator.

Step 3: Connect the root site of your site where you want to delete the subsite:

Step 3a: Connect-PnPOnline -url "https://domain.sharepoint.com/sites/classicsite"

Step 4: Remove-PnPWeb -Url subsite1

Other useful command which you may need - Connect-MsolService