Rootkit detection solution failure

Good afternoon, I have been observing in several recent scans in my AV AVG, the report of the task carried out, in which sen has been repeating the image that I share in the Google Drive link (with a screen shot), indicates that it detected a Rootkit, it evaluates it in the AV Sandbox, but does that poster put one into doubts, about whether that detected Rootkit was eliminated or not? image link caption screen ---> https://drive.google.com/file/d/1g8srDuF078QNp_-OJmGKv4i82f68TxV7/view?usp=sharing - the poster in the image says "We have not been able to resolve this threat, no exists or does not have permission to move it "

I also clarify that the AV AVG is updated, both in its virus definition list, and in the version of the AV, that is, it is all up to date

Hello Osvaldo. 
We'd like to confirm that C:\AVG Sandbox\ is part of AVG setup and this is a false detection. Please ignore it.

Hello Osvaldo. 
We'd like to confirm that C:\AVG Sandbox\ is part of AVG setup and this is a false detection. Please ignore it.