Symfony + Travis-CI + Heroku + GitHub basic .gitignore и travis.yml?

Я создал проект Symfony с композиторской командой: "composer create-project symfony/framework-standard-edition my_project_name", и я поставил его под контроль версий, используя git и GitHub как удаленный хостинг. В добавлении мне нужно использовать Travis-CI для непрерывной интеграции и проверки статуса вместе с Heroku для развертывания.

Впервые я использую Symfony, travis и heroku. У меня проблемы с файлами конфигурации.

Это мой файл.gitignore:

/.idea
/app/config/parameters.yml
/build/
/phpunit.xml
/var/*
!/var/cache
/var/cache/*
!var/cache/.gitkeep
!/var/logs
/var/logs/*
!var/logs/.gitkeep
!/var/sessions
/var/sessions/*
!var/sessions/.gitkeep
!var/SymfonyRequirements.php
/vendor/
/web/bundles/

И это мой файл.travis.yml:

language: php
php:
  - '5.5'
  - '5.6'
  - '7.0'
  - hhvm
  - nightly

Это журнал с ошибкой travis-ci

Я понял, что существует нехватка зависимостей в каталоге поставщиков, которая была проигнорирована git из-за решения сообщения об ошибке heroku bild:

-----> PHP app detected
-----> Bootstrapping...
-----> Installing platform packages...
       - php (7.1.0)
       - apache (2.4.20)
       - nginx (1.8.1)
-----> Installing dependencies...
       Composer version 1.2.2 2016-11-03 17:43:15
 !     WARNING: Your Composer vendor dir is part of your Git repository.
       This directory should not be under version control; only your
       'composer.json' and 'composer.lock' files should be added, which
       will let Composer handle installation of dependencies on deploy.
       To suppress this notice, first remove the folder from your index
       by running 'git rm -r --cached vendor/'.
       Next, edit your project '.gitignore' file and add the folder
       '/vendor/' to the list.
       For more info, refer to the Composer FAQ: https://getcomposer.org/doc/faqs/should-i-commit-the-dependencies-in-my-vendor-directory.md
       Loading composer repositories with package information
       Installing dependencies from lock file
         - Removing symfony/phpunit-bridge (v3.1.7)
         - Removing sensio/generator-bundle (v3.1.1)
       Generating optimized autoload files
       > Incenteev\ParameterHandler\ScriptHandler::buildParameters
       Updating the "app/config/parameters.yml" file
       > Sensio\Bundle\DistributionBundle\Composer\ScriptHandler::buildBootstrap
       > Sensio\Bundle\DistributionBundle\Composer\ScriptHandler::clearCache
       PHP Fatal error:  Uncaught Symfony\Component\Debug\Exception\ClassNotFoundException: Attempted to load class "SensioGeneratorBundle" from namespace "Sensio\Bundle\GeneratorBundle".
       Did you forget a "use" statement for another namespace? in /tmp/build_3481ed5a9ce634e19d2af5d00bd7a3f9/izio7-YourTeam-8f31587/app/AppKernel.php:25
       Stack trace:
       #0 /tmp/build_3481ed5a9ce634e19d2af5d00bd7a3f9/izio7-YourTeam-8f31587/vendor/symfony/symfony/src/Symfony/Component/HttpKernel/Kernel.php(396): AppKernel->registerBundles()
       #1 /tmp/build_3481ed5a9ce634e19d2af5d00bd7a3f9/izio7-YourTeam-8f31587/vendor/symfony/symfony/src/Symfony/Component/HttpKernel/Kernel.php(114): Symfony\Component\HttpKernel\Kernel->initializeBundles()
       #2 /tmp/build_3481ed5a9ce634e19d2af5d00bd7a3f9/izio7-YourTeam-8f31587/vendor/symfony/symfony/src/Symfony/Bundle/FrameworkBundle/Console/Application.php(68): Symfony\Component\HttpKernel\Kernel->boot()
       #3 /tmp/build_3481ed5a9ce634e19d2af5d00bd7a3f9/izio7-YourTeam-8f31587/vendor/symfony/symfony/src/Symfony/Component/Console/Appli in /tmp/build_3481ed5a9ce634e19d2af5d00bd7a3f9/izio7-YourTeam-8f31587/app/AppKernel.php on line 25
       Script Sensio\Bundle\DistributionBundle\Composer\ScriptHandler::clearCache handling the symfony-scripts event terminated with an exception


         [RuntimeException]                                                                                                                                                                                                                   
         An error occurred when executing the "'cache:clear --no-warmup'" command:                                                                                                                                                            
         PHP Fatal error:  Uncaught Symfony\Component\Debug\Exception\ClassNotFoundException: Attempted to load class "SensioGeneratorBundle" from namespace "Sensio\Bundle\GeneratorBundle".                                                 
         Did you forget a "use" statement for another namespace? in /tmp/build_3481ed5a9ce634e19d2af5d00bd7a3f9/izio7-YourTeam-8f31587/app/AppKernel.php:25                                                                                   
         Stack trace:                                                                                                                                                                                                                         
         #0 /tmp/build_3481ed5a9ce634e19d2af5d00bd7a3f9/izio7-YourTeam-8f31587/vendor/symfony/symfony/src/Symfony/Component/HttpKernel/Kernel.php(396): AppKernel->registerBundles()                                                          
         #1 /tmp/build_3481ed5a9ce634e19d2af5d00bd7a3f9/izio7-YourTeam-8f31587/vendor/symfony/symfony/src/Symfony/Component/HttpKernel/Kernel.php(114): Symfony\Component\HttpKernel\Kernel->initializeBundles()                              
         #2 /tmp/build_3481ed5a9ce634e19d2af5d00bd7a3f9/izio7-YourTeam-8f31587/vendor/symfony/symfony/src/Symfony/Bundle/FrameworkBundle/Console/Application.php(68): Symfony\Component\HttpKernel\Kernel->boot()                             
         #3 /tmp/build_3481ed5a9ce634e19d2af5d00bd7a3f9/izio7-YourTeam-8f31587/vendor/symfony/symfony/src/Symfony/Component/Console/Appli in /tmp/build_3481ed5a9ce634e19d2af5d00bd7a3f9/izio7-YourTeam-8f31587/app/AppKernel.php on line 25  
         .                                                                                                                                                                                                                                    


       install [--prefer-source] [--prefer-dist] [--dry-run] [--dev] [--no-dev] [--no-custom-installers] [--no-autoloader] [--no-scripts] [--no-progress] [--no-suggest] [-v|vv|vvv|--verbose] [-o|--optimize-autoloader] [-a|--classmap-authoritative] [--ignore-platform-reqs] [--] [<packages>]...

 !     Push rejected, failed to compile PHP app.
 !     Push failed

Есть ли какая-то команда или изменение, которые я могу сделать, чтобы заставить ее работать как с travis-ci, так и с героем без версии каталога поставщика или каким-то другим способом? Заранее спасибо.