single quote

Signed-off-by: dafnapension <[email protected]>

Author: dafnapension

src/unitxt/error_utils.py

@@ -299,6 +299,6 @@ def error_context(context_object: Any = None, **context):
         yield
     except Exception as e:
         if e.__class__.__name__ == "KeyError":
-            e = RuntimeError(e.__class__.__name__ + ": " + e.args[0])
+            e = RuntimeError(e.__class__.__name__ + ": '" + e.args[0] + "'")
         _add_context_to_exception(e, context_object, **context)
         raise e