Asking for Overwrite of new files

[FloorDecor]

Every time I try to upload a new file, I am given a notification that the "Target file already exists" when that is not the case. These are brand new video files that did not exist before. I have tried all of the options from "overwrite" to "skip" and the notification continues to appear. Eventually the file will transfer, but not in full. A 3 minutes and 21 second video will only transfer the first 4 seconds. I have tried with over 20 different videos and video file types with the same result.