SSDT Publish - Object Reference not set

Question

I am trying to publish an SSDT project and it is throwing an error "Object reference not set to an instance of an object" No other message, is there a way to troubleshoot this.

Answer 1

I had the same error and it was because of the build configuration.

The SSDT was missing the current solution build config. After adding it via Configuration Manager to the SSDT it worked again.

Answer 2

I got this error when right-clicking on a DB project and selecting Publish.. (although nothing was showing at all in the Data Tools Operation window, unlike OP)

I built the project, then Publish... started working again :)

Using SQL Server Data Tools 15.1.61810.11040