Invalid input: books/author/1766. Please provide a comma-separated list of id values, or a single id value. An id value is a positive whole number.
"You've got your own homegrown philosophy. / It works for you, but please don't try to make it work for me."
Invalid input: books/author/1766. Please provide a comma-separated list of id values, or a single id value. An id value is a positive whole number.