致命错误：在Composer安装后，方法class@anonymous::__toString()不得抛出异常

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Executing script cache:clear [KO]
 [KO]
Script cache:clear returned with error code 255
!!  Xdebug: [Config] Invalid mode '1' set for 'xdebug.mode' configuration setting (See: https://xdebug.org/docs/errors#CFG-C-MODE)
!!  
!!  Fatal error: Method class@anonymous::__toString() must not throw an exception, caught SymfonyComponentDependencyInjectionExceptionAutowiringFailedException:  in /var/www/symfony/vendor/symfony/dependency-injection/Compiler/AutowirePass.php on line 236
!!  
!!  Call Stack:
!!      0.0004     403344   1. {main}() /var/www/symfony/bin/console:0
!!      0.1875    2144496   2. SymfonyBundleFrameworkBundleConsoleApplication->run($input = class SymfonyComponentConsoleInputArgvInput 
!!      5.8396   32162400  18. SymfonyComponentDependencyInjectionCompilerAutowirePass->SymfonyComponentDependencyInjectionCompiler{closure:/var/www/symfony/vendor/symfony/dependency-injection/Compiler/AutowirePass.php:229-241}() /var/www/symfony/vendor/symfony/dependency-injection/Compiler/AutowirePass.php:261
!!  
!!  
!!  In AutowirePass.php line 236:
!!                                                                                 
!!    Error: Method class@anonymous::__toString() must not throw an exception, ca  
!!    ught SymfonyComponentDependencyInjectionExceptionAutowiringFailedExcept  
!!    ion:                                                                         
!!                                                                                 
!!  
!!  
Script @auto-scripts was called via post-install-cmd

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