Build solution with Custom Connector (pac solution pack or msbuild)

[ghost]

I have a solution with a custom connector in my DEV environment. When I take the solution and put it in source control (git), I can't build/pack and deploy the solution anymore.

Always give the following on build (or pack):

Following root components are not defined in customizations:
Type='Connector', Id (or schema name)='{c280222c-4add-4292-b590-df8f0d1b789e}'.

This is independent of the combination of export/extract/build/import. Used

• pac solution clone

• pac solution sync

• msbuild /t:rebuild /restore

• pac solution export + pac solution unpack

• pac solution pack

Nothing seems to work. Inspecting the solution and the source everything seems fine.

Solution.xml contains RootComponent for the connector. And there is a Connectors folder with all the files for the connector.

I thought I had everything working one day last week bij not hacking the name of the connector and leaving in the (stupid) '5F' in front of the name. But appearantly this wasn't the (only) problem, as today everything is broken again.