I am trying to upload a wsp file as a sandbox solution to SharePoint Online .
Usually Add-SPUserSolution is used for On-Prem for SandBox wsps.
However, when i execute in SP Online, i am getting the below message:
The term 'Add-SPUserSolution' is not recognized as the name of a cmdlet
I think there should be an alternative in SP Online
good for installing once uploaded what i am looking for is how to add/upload to the sandbox gallery.
This https://www.vrdmn.com/2015/11/install-and-update-sandbox-solutions.html might help...