“Object reference not set to an instance of an object” when building my cloud project

Question

When I build my solution with a bunch of cloud projects, I see one or more \"Error: Object reference not set to an instance of an object\" messages in the output. When I try

Answer 1

None of these answer helped me. I decided to reinstall the Azure tools, and noticed that I had more than one version installed. I uninstalled the old versions, reinstalled the latest version, and this fixed it for me.