Invalid input: img/book_scans/heads_spine.png. Please provide a comma-separated list of id values, or a single id value. An id value is a positive whole number.
"Sometimes what we know gets in the way of what could be."
Invalid input: img/book_scans/heads_spine.png. Please provide a comma-separated list of id values, or a single id value. An id value is a positive whole number.