This may not be the logical answer to this question but it helped me when I did this.
1) First check for program updates in your account and update them.
2) Next, the listings in which you are getting this error - select them all and bulk edit within turbo lister.
3) In the bulk edit mode, save the listings without making any changes and then try to upload.
4) It usually removes the error when I do this.
As informed earlier, this may not be logical answer.
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