• I have created a button using HTML and while the button works and opens the flipbook, it shows an error within the button below the text that reads “Error: Set a Valid Document Source.” There is nothing wrong that I can tell that is covered in the PDF Not Loading! document.

    Here is the code:

    <div class="_df_button" source="https://neighbur.net/wp-content/uploads/2026/07/NEIG_JUL26_150.pdf">View July 2026 Edition</div>

    Thanks!

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