No there is not, well not in a way other software has.

But there are some ways to work with mistakes and to correct.

Next to the save button you can set the save option at preview of. If set to off you can preview your changes if you don't like them then press the cancel button. This is the closest you can get to Undo.

But beware to save from time to time else you might lose a lot of work if the programs stopts responding or you forget to save when closing.

So in a way you have some control.

I make a backup of the project regurly is tep5 or if I test and realy going to mixup the project I make a duplicate project in step 1 and work on the duplicate (for instance if I change the complete layout / template). If it works like I want I continue if not I delede it or rename and go back to the original.

There is also the option to create a backup copy next to the save button so you can go back in the project selection with the  backu option there.

But a real undo button or undo command, no