Cannot remove all website data from Safari on iMac
I have an iMac running High Sierra ver. 10.13.6 and I am using Safari ver. 11.1.2 and when I go to Preferences > Privacy > Manage Website Data > Remove All, I can get all but 24 or 25 items to delete. I have closed the browser and reopened it and gone through the steps again with the same result. Does anyone have a solution? Thanks!
iMac, macOS High Sierra (10.13.2)