Can you verify that the listed files are accessible on application level? You can test that by navigating directly to one of the problematic files through the application URL and see the result. For example:
If this is not the case, though, can you provide a little more information on the subject? Do you have any modifications applied to FileExplorer? It will be really helpful if you isolate problematic behavior into sample runnable project
and send it for a further investigation.
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