无法替换别名＆＃34; mea.twig.JsExtension＆＃34; ，Symfony 3.4服务别名

Question

services.yml

mea.twig.JsExtension:
    alias: Mea\CoreBundle\Twig\MeaExtension
    public: true
    arguments: ["@service_container","@kernel", "@mea.metatags", "@mea.asset"]
    tags:
        - { name: twig.extension }

给出错误

InvalidArgumentException
Unable to replace alias "mea.twig.JsExtension" with actual definition "Mea\CoreBundle\Twig\MeaExtension".

in ReplaceAliasByActualDefinitionPass.php (line 57)
at ReplaceAliasByActualDefinitionPass->process(object(ContainerBuilder))
in Compiler.php (line 141)
at Compiler->compile(object(ContainerBuilder))
in ContainerBuilder.php (line 759)
at ContainerBuilder->compile()
in Kernel.php (line 643)

Symfony 3.4

Answer 1

有4种可能的原因，Symfony\Component\DependencyInjection\Exception\InvalidArgumentException类型的例外情况可能会完全忽视它们：

• ServiceNotFoundException;
• ParameterNotFoundException;
• EnvNotFoundException;
• EnvParameterException。

我确信第一个例外是您问题的真正原因。