What do you mean, when a file is deleted? A file on an OS? If so what OS, and what auditing do you have for that OS? A file on Splunk? Splunk event data?
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It looks like you or one of your users are trying to access this app which doesn't have a web interface. Have you tried disabling this app from being visible so users can't access it?
See here, at the bottom of the page it tells you to disable visibility for users
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