File not found for 313643: File not found in Amazon S3 for key 313643. Status code: 403.. Setting size to 0.

Hi There, Console messages: I am upgrading from mendox 6.10.10 to mendix 7.23.1 from the category: FileDocumentSizesPopulateJob When restarting the app a great number of this type of messages is generated. 131459 messages out of 138424 DocumentFiles I wonder if this is normal for this upgrade. As far as I can see, the filedocuments are available and have  content Do I need to bother about this, or is it just a "normal” upgrade message  
1 answers

The FileDocumentSizesPopulate job checks the content size of all filedocuments and updates them accordingly.
So the first after upgrading to a Mendix version which includes this job, it indeed will generate a lot of log lines.