hmm ok, can you share how this happened? does it just broke after some update? if it happens again please consider saving a copy of the folder so we can replicate the problem.
I found four templates with the same folder shortid
actually this does not looks wrong, if you have four templates with same folder.shortid then it means that they have the same parent, the weird part would be if you find folders sharing the same shortid.
anyway let us know if you find this problem again, and remember to save the data folder somewhere