Hey VenkataKrishna, it's likely that AVG isn't related to the file being missing, as others have recommended I would check the settings of your file repair program to see what happened, perhaps it has a log function that might tell you what happened to the file, if it was able to restore it, etc?
That being said, AVG and Avast do have advanced techniques for detecting malware and zero-days, such as behavior analysis, AI, real-time updates, etc, so it is technically possible the file was flagged if it were either trying to execute or was behaving strangely, or exhibited malware characteristics. If this were the case, you should have received a warning right away explaining what was happening and the course of action to take, e.g. block and quarantine the file, allow it, etc. (This also depends on how you have AVG set up.)