Definitely corruption there, just under half of the files are empty. Try copying the contents of the rs_one (and if that doesn't work, rs_two) backup folder into the main save folder, they might still be intact.
If this is happening with a lot of your saves, something is interrupting the save process. If your documents folder is pointed somewhere online like OneDrive, that can happen if the connection gets broken during the save; otherwise you may want to check your hard drive for faults; maybe the system memory as well.
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