Fatal error: Uncaught Error: Call to undefined function app() in /home/bookshelter/public_html/storage/framework/views/6ae73e63bcf1afc9b74da715e0b59bef35a8b946.php:1 Stack trace: #0 {main} thrown in /home/bookshelter/public_html/storage/framework/views/6ae73e63bcf1afc9b74da715e0b59bef35a8b946.php on line 1