* Improved the error message when encountering an invalid Service Account specification to help developers use the correct one (provided by [@puf](https://github.com/puf) in [this StackOverflow answer](https://stackoverflow.com/a/55081397/284325))
* Improved the error message when encountering an invalid Service Account specification to help developers use the correct one (provided by [@puf](https://github.com/puf) in [this StackOverflow answer](https://stackoverflow.com/a/55081397/284325))