Fatal error: Uncaught Error: Call to undefined function env() in /home/uconline/public_html/pruebas.uconline.mx/vendor/alexo/laravel-payu/src/config/payu.php:4 Stack trace: #0 {main} thrown in /home/uconline/public_html/pruebas.uconline.mx/vendor/alexo/laravel-payu/src/config/payu.php on line 4