未捕获错误：找不到类 'SymfonyComponentConfigResourceClassExistenceResource'

我添加了Symfony依赖项注入容器(composer require symfony/dependency-injection)：https://symfony.com/doc/current/components/dependency_injection.html

运行：composer dump-autoload -o以重新组织类(通过composer安装新库后，/www/vendor/composer/autoload_classmap.php文件为空)。

在我的init.php文件中运行这个：

use SymfonyComponentDependencyInjectionContainerBuilder;
use SymfonyComponentDependencyInjectionReference;
use MyAppCoreApp; 
use MyAppCoreDatabase; 
use MyAppModelsSystemUser; 
use MyAppModelsCustomer; 
use MyAppCoreLog;
$container = new ContainerBuilder();
$container->autowire( Log::class );
$container->autowire( Database::class );
$container->autowire( SystemUser::class );
$container->autowire( Customer::class );
$container->autowire( App::class )
->setPublic( true );
$container->compile();
$app = $container->get( App::class );

并在CCD_ 5上断开。

我错过了什么？

找不到任何解决此问题的线索。

我做错了什么？

PHP Fatal error:  Uncaught Error: Class 'SymfonyComponentConfigResourceClassExistenceResource' not found in /www/vendor/symfony/dependency-injection/Compiler/AutowirePass.php:385
Stack trace:
#0 /www/vendor/symfony/dependency-injection/Compiler/AutowirePass.php(225): SymfonyComponentDependencyInjectionCompilerAutowirePass->createTypeNotFoundMessage(Object(SymfonyComponentDependencyInjectionTypedReference), 'argument "$db" ...')
#1 /www/vendor/symfony/dependency-injection/Compiler/AutowirePass.php(256): SymfonyComponentDependencyInjectionCompilerAutowirePass->SymfonyComponentDependencyInjectionCompiler{closure}()
#2 /www/vendor/symfony/dependency-injection/Compiler/AutowirePass.php(165): SymfonyComponentDependencyInjectionCompilerAutowirePass->autowireMethod(Object(ReflectionMethod), Array)
#3 /www/vendor/symfony/dependency-injection/Compiler/AutowirePass.php(123): SymfonyComponentDependencyInjectionCompilerAutowirePass->autowireCalls(Object(ReflectionClass), true)
#4 /www/vendor/symfony/dependency-injection/Compiler/AutowirePass.php(71): SymfonyComponentDependencyInjectionCompilerAutowirePass->doProcessValue(Object(SymfonyComponentDependencyInjectionDefinition), true)
#5 /www/vendor/symfony/dependency-injection/Compiler/AbstractRecursivePass.php(82): SymfonyComponentDependencyInjectionCompilerAutowirePass->processValue(Object(SymfonyComponentDependencyInjectionDefinition), true)
#6 /www/vendor/symfony/dependency-injection/Compiler/AutowirePass.php(100): SymfonyComponentDependencyInjectionCompilerAbstractRecursivePass->processValue(Array, true)
#7 /www/vendor/symfony/dependency-injection/Compiler/AutowirePass.php(71): SymfonyComponentDependencyInjectionCompilerAutowirePass->doProcessValue(Array, true)
#8 /www/vendor/symfony/dependency-injection/Compiler/AbstractRecursivePass.php(46): SymfonyComponentDependencyInjectionCompilerAutowirePass->processValue(Array, true)
#9 /www/vendor/symfony/dependency-injection/Compiler/AutowirePass.php(52): SymfonyComponentDependencyInjectionCompilerAbstractRecursivePass->process(Object(SymfonyComponentDependencyInjectionContainerBuilder))
#10 /www/vendor/symfony/dependency-injection/Compiler/Compiler.php(95): SymfonyComponentDependencyInjectionCompilerAutowirePass->process(Object(SymfonyComponentDependencyInjectionContainerBuilder))
#11 /www/vendor/symfony/dependency-injection/ContainerBuilder.php(750): SymfonyComponentDependencyInjectionCompilerCompiler->compile(Object(SymfonyComponentDependencyInjectionContainerBuilder))
#12 /www/myapp/init.php(50): SymfonyComponentDependencyInjectionContainerBuilder->compile()
#13 /www/public/index.php(10): require_once('/www/myapp/...')
#14 {main}
thrown in /www/vendor/symfony/dependency-injection/Compiler/AutowirePass.php on line 385

composer.json

{
"name": "potato/www",
"authors": [
{
"name": "potato potato",
"email": "potato@MyApp.com"
}
],
"require": {
"monolog/monolog": "^1.24",
"filp/whoops": "^2.3",
"symfony/dependency-injection": "^4.2"
}, 
"autoload":{
"psr-4": {
"MyApp\": "myapp"
}
},
"require-dev": {
"squizlabs/php_codesniffer": "^3.3"
}
}