Error while unlinking a project from sandbox

I have a cloud node available, but my project was running in sandbox, so i need to unlink it now to link it to the licenced cloud node. But whenever i am trying to unlink the project it is throwing some error message even though i am the technical contact of the project. if anybody knows the solution please help.
1 answers

Solution is to file a support ticket through

I've had this before, and the only way to fix is is through support.