Merge pull request #87 from OpenFreeEnergy/fix-exception-string

Fix the way exception class names are made strings

gufe/protocols/protocolunit.py

@@ -334,7 +334,7 @@ def execute(self, *,
                 source_key=self.key,
                 inputs=inputs,
                 outputs=dict(),
-                exception=(str(type(e)), e.args),
+                exception=(e.__class__.__qualname__, e.args),
                 traceback=traceback.format_exc()
             )