TimeMachine Prepares for Back Up, then Stops
I have not been able to back up my MacBook Pro (10.13.16) since February 2019. Every time I plug in the external hard drive and select "Back Up Now," Time Machine reads that it is "Preparing for Backup" then after maybe 10 minutes or so, it stops. It provides data on when the last backup happened, but it will not back up my hard drive. It's not like it gets stuck preparing for back up. It appears to go through that motion only to not back up my computer. Can anyone help me figure out why this is happening and how I can fix it? Thank you!
MacBook Pro 13", macOS 10.13