Sharepoint - Error while running Powershell Script in o365

This is because you are referring 2013 Client SDK dll's.. Look the path points to 15 hive

You should install SPO Client SDK and change to 16 hive in Add-Type

https://www.microsoft.com/en-us/download/details.aspx?id=42038

Most likely you are not binding to the right context. If you are working with the UserProfile, you need to bind your context to the My Site host, https://tenant-my.sharepoint.com.