Update nbformat/v3/rwbase.py

Author: gwincr11

nbformat/v3/rwbase.py

@@ -26,7 +26,7 @@ def restore_bytes(nb):
                         if 'jpeg' in output:
                             output.jpeg = str_to_bytes(output.jpeg, 'ascii')
     except KeyError as e:
-        validator.ValidationError(f"The notebook was invalid missing the key: {e.message}")
+        raise validator.ValidationError(f"The notebook was invalid missing the key: {e.message}")
     return nb
 
 # output keys that are likely to have multiline values