When attempting to remove photo and video files from both the SD card (removed from drone and plugged into MAC) and from the drone's internal storage (connected via USB cable to MAC) the files are moved into a trash folder on the respective storage and when I attempt to move these files to trash (delete) I get the following warning "The operation can’t be completed because an unexpected error occurred (error code -50)." and the files can not be moved/deleted. I am running macOS Mojave 10.14.5. Suggestions?? Thanks