Azure DevOps error: The "path" argument must be of type string

[mail2seban (Sebastian Peter)]

This issue can be resolved by adding a pipeline variable build.artifactStagingDirectory as mentioned by the below comment

Publish Quality Gate Result. Path must be a string. Received undefined

Trick the task in the release pipeline by creating a variable, scoped only for that stage, called build.artifactStagingDirectory set to $(SYSTEM.ARTIFACTSDIRECTORY), tricking the task into behaving as if within a Build pipeline (for which it was designed for).