Uncaught Error: Interface JsonSerializable not found

[Rohaan123]

The website is currently unable to handle this request.

HTTP ERROR 500

Below are the error log errors. How we can solve it.

[10-Dec-2022 17:16:03 UTC] PHP Fatal error: Uncaught Error: Interface ‘JsonSerializable’ not found in /home/aimsacademics/public_html/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Support/Fluent.php:10
Stack trace:
#0 /home/aimsacademics/public_html/lib/pkp/lib/vendor/composer/ClassLoader.php(571): include()
#1 /home/aimsacademics/public_html/lib/pkp/lib/vendor/composer/ClassLoader.php(428): Composer\Autoload\includeFile(‘/home/aimsacade…’)
#2 [internal function]: Composer\Autoload\ClassLoader->loadClass(‘Illuminate\Supp…’)
#3 /home/aimsacademics/public_html/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Support/Traits/CapsuleManagerTrait.php(35): spl_autoload_call(‘Illuminate\Supp…’)
#4 /home/aimsacademics/public_html/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Database/Capsule/Manager.php(32): Illuminate\Database\Capsule\Manager->setupContainer(Object(Illuminate\Container\Container))
#5 /home/aimsacademics/public_html/lib/pkp/classes/core/PKPApplication.inc.php(209): Illuminate\Database\Capsule\Manager->__construct()
#6 /ho in /home/aimsacademics/public_html/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Support/Fluent.php on line 10

[rcgillis]

Hi @Rohaan123,

Can you please indicate the version number (e.g. 3.3-0-8) and software that you are using (presumably OJS?) - please include this information with your posts as it assists others with troubleshooting.

Best regards,

Roger
PKP Team

[Rohaan123]

The issue has been solved by the hosting provider.