SLSTR stitching: error in creation

from time to time, the stitching operation gives some different errors, this time I obtained this one,almost at the end of the process, :

RuntimeError org.esa.snap.core.gpf.OperatorException: Error when stitching missing elements entry in manifest file: Could not determine bandset

How can it be avoided or fixed?

Dear Antonio,
in the xfdumanifest.xml-files there should be entries named slstr:missingElements . If you do not need this information, you can remove this part from every xml. Stitching should work then. I would be happy if you could let me have the xml-files of the products though, as I don’t see what exactly caused this problem.
Also, if you have any similar errors, please let us know.