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Fatal error: Uncaught TypeError: rp_books_where(): Argument #1 ($books) must be of type array, string given, called in /data/11/1/39/68/1039883/user/1070636/htdocs/reagentpress-com/series/american-national-parks-library/index.php on line 8 and defined in /data/11/1/39/68/1039883/user/1070636/htdocs/reagentpress-com/includes/helpers.php:354
Stack trace:
#0 /data/11/1/39/68/1039883/user/1070636/htdocs/reagentpress-com/series/american-national-parks-library/index.php(8): rp_books_where('books_william', Object(Closure))
#1 {main}
thrown in /data/11/1/39/68/1039883/user/1070636/htdocs/reagentpress-com/includes/helpers.php on line 354