When using Generate Presentation feature, there were no values populated for the attribute tags.
One of the causes of this issue could be when you are adding a text box from the option that you have from the PowerPoint.
In the image, we can see that there is a text box inside another text box.
First, if you want to display text or numbers in the squares, you should choose the 'Text Field'.
Second, You should click twice in the square and then copy the relevant tags without adding another text box.
For Further Assistance
If this article does not resolve the issue, please contact Totango Support for further assistance.