File Size Monitor stating file does not exist

File Size Monitor stating file does not exist

I am relatively new to OpManager, so please bear with me.
 
I am attempting to monitor the size of the security log file for our servers. I ensured the WMI credentials were correct and that the path was correct, but upon testing the monitor I am told that the file does not exist. Please let me know if there is any more information I can provide in order for you to assist me further. Thanks in advance!

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