How to delete a damaged or incomplete application if it is not in the applications folder

I have an application called Template on my computer without an icon.

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When I click on it, it says that "You can not open the" "application because it may be damaged or incomplete."

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I looked in the application folder and looked in the Finder trying to find this app to throw in the trash, but I can not find it. This is not in the application folder or elsewhere. So, how can I get rid of it ?!

I did not have the habit of having this app, but I think it happened after a system update a long time ago.

For information, I am under macOS Mojave v. 10.14.3.