Some PDF files are not opening in my tablet but they do in my computer
https://s3.amazonaws.com/zotero.org/images/forums/u18102549/y5qvb16cuuy0ly1ijufe.jpg
You can see in the attachment that some files have an exclamation Mark besides the logo of the PDF. I am unable to pensando them.
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This has nothing to do with “indexing”.