Class UnableToParseMissingJinja2

constructor/exceptions.py:49–59

class UnableToParseMissingJinja2(UnableToParse):
    def error_body(self):
        return "\n".join(
            [
                super().error_body(),
                indent("""\
                It appears you are missing jinja2.  Please install that
                package, then attempt to build.
            """),
            ]
        )