I am getting the following error when I try to open the attached document:
Found a group shape that does not have a group shape container. For free technical support, please post this error and the file in the Aspose.Word Forums <https://forum.aspose.com/c/words/8>.
This is a known issue and we are extensively working on the drawing layer to fix issues like this one. However, until it is completed, you should use a workaround, for example replace the shape that causes the problem with an image.