Class "PaypalServerSdkLib\PaypalServerSdkClientBuilder" not found

[asia2tv]

I have a problem

Context:

{
  "exception": "[object] (Error(code: 0): Class \"PaypalServerSdkLib\\PaypalServerSdkClientBuilder\" not found at /home/ascom/public_html/project/app/Http/Controllers/Frontend/PayPalController.php:50)
[stacktrace]
#0 [internal function]: App\\Http\\Controllers\\Frontend\\PayPalController->__construct()
#1 /home/ascom/public_html/project/vendor/laravel/framework/src/Illuminate/Container/Container.php(989): ReflectionClass->newInstanceArgs(Array)
#2 /home/ascom/public_html/project/vendor/laravel/framework/src/Illuminate/Container/Container.php(819): Illuminate\\Container\\Container->build('App\\\\Http\\\\Contro...')
#3 /home/ascom/public_html/project/vendor/laravel/framework/src/Illuminate/Foundation/Application.php(1048): Illuminate\\Container\\Container->resolve('App\\\\Http\\\\Contro...', Array, true)
#4 /home/ascom/public_html/project/vendor/laravel/framework/src/Illuminate/Container/Container.php(755): Illuminate\\Foundation\\Application->resolve('App\\\\Http\\\\Contro...', Array)
#5 /home/ascom/public_html/project/vendor/laravel/framework/src/Illuminate/Foundation/Application.php(1030): Illuminate\\Container\\Container->make('App\\\\Http\\\\Contro...', Array)
#6 /home/ascom/public_html/project/vendor/laravel/framework/src/Illuminate/Routing/Route.php(285): Illuminate\\Foundation\\Application->make('App\\\\Http\\\\Contro...')
#7 /home/ascom/public_html/project/vendor/laravel/framework/src/Illuminate/Routing/Route.php(1125): Illuminate\\Routing\\Route->getController()
#8 /home/ascom/public_html/project/vendor/laravel/framework/src/Illuminate/Routing/Route.php(1054): Illuminate\\Routing\\Route->controllerMiddleware()
#9 /home/ascom/public_html/project/vendor/laravel/framework/src/Illuminate/Routing/Router.php(820): Illuminate\\Routing\\Route->gatherMiddleware()
#10 /home/ascom/public_html/project/vendor/laravel/framework/src/Illuminate/Routing/Router.php(802): Illuminate\\Routing\\Router->gatherRouteMiddleware(Object(Illuminate\\Routing\\Route))
#11 /home/ascom/public_html/project/vendor/laravel/framework/src/Illuminate/Routing/Router.php(786): Illuminate\\Routing\\Router->runRouteWithinStack(Object(Illuminate\\Routing\\Route), Object(Illuminate\\Http\\Request))
#12 /home/ascom/public_html/project/vendor/laravel/framework/src/Illuminate/Routing/Router.php(750): Illuminate\\Routing\\Router->runRoute(Object(Illuminate\\Http\\Request), Object(Illuminate\\Routing\\Route))
#13 /home/ascom/public_html/project/vendor/laravel/framework/src/Illuminate/Routing/Router.php(739): Illuminate\\Routing\\Router->dispatchToRoute(Object(Illuminate\\Http\\Request))
#14 /home/ascom/public_html/project/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(201): Illuminate\\Routing\\Router->dispatch(Object(Illuminate\\Http\\Request))
#15 /home/ascom/public_html/project/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(144): Illuminate\\Foundation\\Http\\Kernel->Illuminate\\Foundation\\Http\\{closure}(Object(Illuminate\\Http\\Request))
#16 /home/ascom/public_html/project/vendor/litespeed/lscache-laravel/src/LSCacheMiddleware.php(21): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}(Object(Illuminate\\Http\\Request))
#17 /home/ascom/public_html/project/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(183): Litespeed\\LSCache\\LSCacheMiddleware->handle(Object(Illuminate\\Http\\Request), Object(Closure))
#18 /home/ascom/public_html/project/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/TransformsRequest.php(21): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}(Object(Illuminate\\Http\\Request))
#19 /home/ascom/public_html/project/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/ConvertEmptyStringsToNull.php(31): Illuminate\\Foundation\\Http\\Middleware\\TransformsRequest->handle(Object(Illuminate\\Http\\Request), Object(Closure))
#20 /home/ascom/public_html/project/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(183): Illuminate\\Foundation\\Http\\Middleware\\ConvertEmptyStringsToNull->handle(Object(Illuminate\\Http\\Request), Object(Closure))
#21 /home/ascom/public_html/project/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/TransformsRequest.php(21): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}(Object(Illuminate\\Http\\Request))
#22 /home/ascom/public_html/project/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/TrimStrings.php(51): Illuminate\\Foundation\\Http\\Middleware\\TransformsRequest->handle(Object(Illuminate\\Http\\Request), Object(Closure))
#23 /home/ascom/public_html/project/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(183): Illuminate\\Foundation\\Http\\Middleware\\TrimStrings->handle(Object(Illuminate\\Http\\Request), Object(Closure))
#24 /home/ascom/public_html/project/vendor/laravel/framework/src/Illuminate/Http/Middleware/ValidatePostSize.php(27): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}(Object(Illuminate\\Http\\Request))
#25 /home/ascom/public_html/project/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(183): Illuminate\\Http\\Middleware\\ValidatePostSize->handle(Object(Illuminate\\Http\\Request), Object(Closure))
#26 /home/ascom/public_html/project/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/PreventRequestsDuringMaintenance.php(110): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}(Object(Illuminate\\Http\\Request))
#27 /home/ascom/public_html/project/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(183): Illuminate\\Foundation\\Http\\Middleware\\PreventRequestsDuringMaintenance->handle(Object(Illuminate\\Http\\Request), Object(Closure))
#28 /home/ascom/public_html/project/vendor/laravel/framework/src/Illuminate/Http/Middleware/HandleCors.php(49): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}(Object(Illuminate\\Http\\Request))
#29 /home/ascom/public_html/project/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(183): Illuminate\\Http\\Middleware\\HandleCors->handle(Object(Illuminate\\Http\\Request), Object(Closure))
#30 /home/ascom/public_html/project/vendor/laravel/framework/src/Illuminate/Http/Middleware/TrustProxies.php(58): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}(Object(Illuminate\\Http\\Request))
#31 /home/ascom/public_html/project/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(183): Illuminate\\Http\\Middleware\\TrustProxies->handle(Object(Illuminate\\Http\\Request), Object(Closure))
#32 /home/ascom/public_html/project/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/InvokeDeferredCallbacks.php(22): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}(Object(Illuminate\\Http\\Request))
#33 /home/ascom/public_html/project/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(183): Illuminate\\Foundation\\Http\\Middleware\\InvokeDeferredCallbacks->handle(Object(Illuminate\\Http\\Request), Object(Closure))
#34 /home/ascom/public_html/project/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(119): Illuminate\\Pipeline\\Pipeline->Illuminate\\Pipeline\\{closure}(Object(Illuminate\\Http\\Request))
#35 /home/ascom/public_html/project/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(176): Illuminate\\Pipeline\\Pipeline->then(Object(Closure))
#36 /home/ascom/public_html/project/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(145): Illuminate\\Foundation\\Http\\Kernel->sendRequestThroughRouter(Object(Illuminate\\Http\\Request))
#37 /home/ascom/public_html/project/vendor/laravel/framework/src/Illuminate/Foundation/Application.php(1190): Illuminate\\Foundation\\Http\\Kernel->handle(Object(Illuminate\\Http\\Request))
#38 /home/ascom/public_html/index.php(17): Illuminate\\Foundation\\Application->handleRequest(Object(Illuminate\\Http\\Request))
#39 {main}
"

[christophrrb]

Any solution on this so far?

[asadali214]

@asia2tv This most probably is looking like a missing import issue, can you double check if you have added the following import:

use PaypalServerSdkLib\PaypalServerSdkClientBuilder;

Cc: @christophrrb

[christophrrb]

Yes, I have, so that's not the issue for me 😕.

I even downloaded sample code form this link https://www.paypalobjects.com/dev-studio-space/repositories/multilanguage/standard_html_php.zip, and if I run composer install and then composer start, the sample code gives me that same error. My code was using version 0.6.1, and the PayPal sample code uses version 0.6.0, and they both gave me the same error.

Edit: Added link and spelling

[christophrrb]

@asia2tv @asadali214 found the issue.

There is a capitalization discrepancy between what's show on the Integrate PayPal Checkout website vs. what's in the PayPal PHP GitHub docs.

The website shows use PaypalServerSdkLib\PaypalServerSDKClientBuilder;,

but it's supposed to be use PaypalServerSdkLib\PaypalServerSdkClientBuilder; ("Sdk" instead of "SDK") as in the GitHub docs example.

The sample code link from my first message matches the website, so anyone following the website will likely get this error.

In short, to fix:

• Change line 6 of your index.php file to use PaypalServerSdkLib\PaypalServerSdkClientBuilder;
• Run composer dump-autoload so that composer has the right name to autoload now.
• Run composer start, and it should work.