Hi @Anonymous,
Did you import the Flow from a zip file provided in a user's post? There is no such template in the MS Flow template list.
I met this Flow and imported it, tested on my side and it worked well:


You can delete the trigger then recreate it to try it again.
Best Regards,
Community Support Team _ Lin Tu
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.