Class 更新至Symfony 5.2-ReflectionException。类不存在

这是我的第一个问题。我们正在将Symfony中的项目从3.4版本更新到5.2版本，并将结构更改为flex。不幸的是，当我尝试启动应用程序时，有一个错误列表：“ReflectionException”。类“”不存在。在services.yaml上设置了自动布线。我不知道为什么会发生这些错误，以及如何删除它们。 这是带有错误的屏幕截图： [1] :

服务配置有以下代码：

服务： #此文件中服务的默认配置

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将升级外包给同时了解3.4和5.2的人。如果他们也熟悉应用程序需要做的事情，则可获得奖金。

ReflectionException
in vendor/doctrine/persistence/lib/Doctrine/Persistence/AbstractManagerRegistry.php (line 168)
in vendor/doctrine/persistence/lib/Doctrine/Persistence/AbstractManagerRegistry.php -> __construct (line 168)
in vendor/doctrine/doctrine-bundle/Repository/ServiceEntityRepository.php -> getManagerForClass (line 37)
in var/cache/dev/ContainerTIWmUBx/getQueueItemRepositoryDoctrineService.php -> __construct (line 30)
in var/cache/dev/ContainerTIWmUBx/Tixi_KernelDevDebugContainer.php :: do (line 506)
in var/cache/dev/ContainerTIWmUBx/getHomeControllerService.php -> load (line 23)
in var/cache/dev/ContainerTIWmUBx/Tixi_KernelDevDebugContainer.php :: do (line 506)
in vendor/symfony/dependency-injection/Container.php -> load (line 246)
in vendor/symfony/dependency-injection/Container.php -> make (line 228)
in vendor/symfony/http-kernel/Controller/ContainerControllerResolver.php -> get (line 53)
in vendor/symfony/framework-bundle/Controller/ControllerResolver.php -> instantiateController (line 29)
in vendor/symfony/http-kernel/Controller/ControllerResolver.php -> instantiateController (line 120)

_defaults:
    autowire: true      # Automatically injects dependencies in your services.
    autoconfigure: true # Automatically registers your services as commands, event subscribers, etc.

{projectname}\ApiBundle\:
    resource: '../src/ApiBundle/*'
    exclude: '../src/ApiBundle/{DBAL, Resources}'
{projectname}\App\AppBundle\:
    resource: '../src/App/AppBundle/*'
    exclude: '../src/App/AppBundle/{Command, DependencyInjection, Export, Resources, Tests}'
{projectname}\CoreDomain\:
    resource: '../src/CoreDomain/*'
{projectname}\CoreDomainBundle\:
    resource: '../src/CoreDomainBundle/*'
    exclude: '../src/CoreDomainBundle/{Command, DependencyInjection, Resources, Tests}'
{projectname}\SecurityBundle\:
    resource: '../src/SecurityBundle/*'
    exclude: '../src/SecurityBundle/{Command, DependencyInjection, Resources}'
{projectname}\ApiBundle\Controller\:
    resource: '../src/ApiBundle/Controller'
    tags: [ 'controller.service_arguments' ] [...]