Fatal error: Uncaught Error: Interface 'JsonSerializable' not found in /home/stasa/public_html/core/vendor/laravel/framework/src/Illuminate/Support/Collection.php:40 Stack trace: #0 /home/stasa/public_html/core/vendor/composer/ClassLoader.php(576): include() #1 /home/stasa/public_html/core/vendor/composer/ClassLoader.php(427): Composer\Autoload\{closure}('/home/stasa/pub...') #2 [internal function]: Composer\Autoload\ClassLoader->loadClass('Illuminate\\Supp...') #3 [internal function]: spl_autoload_call('Illuminate\\Supp...') #4 /home/stasa/public_html/core/vendor/tightenco/collect/src/Collect/Support/helpers.php(7): class_exists('Illuminate\\Supp...') #5 /home/stasa/public_html/core/vendor/composer/autoload_real.php(41): require('/home/stasa/pub...') #6 /home/stasa/public_html/core/vendor/composer/autoload_real.php(45): {closure}('fe62ba7e10580d9...', '/home/stasa/pub...') #7 /home/stasa/public_html/core/vendor/autoload.php(25): ComposerAutoloaderInitca96ce8fc95757482ef444985a6b105b::getLoader() #8 /home/stasa/public_htm in /home/stasa/public_html/core/vendor/laravel/framework/src/Illuminate/Support/Collection.php on line 40