[FrameworkBundle][Workflow] Throw exception is workflow.xxx.transitions is not an array

[lyrixx]

Q	A
Branch?	5.4
Bug fix?	yes
New feature?	no
Deprecations?	no
Tickets
License	MIT
Doc PR

---

The following code raises a fatal error:

framework:
    workflows:
        articles:
            transitions:

ErrorException:
Warning: foreach() argument must be of type array|object, null given

  at /home/gregoire/dev/github.com/Faume-co/modules-shopify/vendor/symfony/framework-bundle/DependencyInjection/Configuration.php:522
  at Symfony\Bundle\FrameworkBundle\DependencyInjection\Configuration->Symfony\Bundle\FrameworkBundle\DependencyInjection\{closure}()
     (/home/gregoire/dev/github.com/Faume-co/modules-shopify/vendor/symfony/config/Definition/Builder/ExprBuilder.php:246)
  at Symfony\Component\Config\Definition\Builder\ExprBuilder::Symfony\Component\Config\Definition\Builder\{closure}()
     (/home/gregoire/dev/github.com/Faume-co/modules-shopify/vendor/symfony/config/Definition/BaseNode.php:357)
  at Symfony\Component\Config\Definition\BaseNode->normalize()
     (/home/gregoire/dev/github.com/Faume-co/modules-shopify/vendor/symfony/config/Definition/ArrayNode.php:292)
  at Symfony\Component\Config\Definition\ArrayNode->normalizeValue()
     (/home/gregoire/dev/github.com/Faume-co/modules-shopify/vendor/symfony/config/Definition/BaseNode.php:385)
  at Symfony\Component\Config\Definition\BaseNode->normalize()
     (/home/gregoire/dev/github.com/Faume-co/modules-shopify/vendor/symfony/config/Definition/PrototypedArrayNode.php:251)
  at Symfony\Component\Config\Definition\PrototypedArrayNode->normalizeValue()
     (/home/gregoire/dev/github.com/Faume-co/modules-shopify/vendor/symfony/config/Definition/BaseNode.php:385)
  at Symfony\Component\Config\Definition\BaseNode->normalize()
     (/home/gregoire/dev/github.com/Faume-co/modules-shopify/vendor/symfony/config/Definition/ArrayNode.php:292)
  at Symfony\Component\Config\Definition\ArrayNode->normalizeValue()
     (/home/gregoire/dev/github.com/Faume-co/modules-shopify/vendor/symfony/config/Definition/BaseNode.php:385)
  at Symfony\Component\Config\Definition\BaseNode->normalize()
     (/home/gregoire/dev/github.com/Faume-co/modules-shopify/vendor/symfony/config/Definition/ArrayNode.php:292)
  at Symfony\Component\Config\Definition\ArrayNode->normalizeValue()
     (/home/gregoire/dev/github.com/Faume-co/modules-shopify/vendor/symfony/config/Definition/BaseNode.php:385)
  at Symfony\Component\Config\Definition\BaseNode->normalize()
     (/home/gregoire/dev/github.com/Faume-co/modules-shopify/vendor/symfony/config/Definition/Processor.php:32)
  at Symfony\Component\Config\Definition\Processor->process()
     (/home/gregoire/dev/github.com/Faume-co/modules-shopify/vendor/symfony/config/Definition/Processor.php:46)
  at Symfony\Component\Config\Definition\Processor->processConfiguration()
     (/home/gregoire/dev/github.com/Faume-co/modules-shopify/vendor/symfony/dependency-injection/Extension/Extension.php:109)
  at Symfony\Component\DependencyInjection\Extension\Extension->processConfiguration()
     (/home/gregoire/dev/github.com/Faume-co/modules-shopify/vendor/symfony/framework-bundle/DependencyInjection/FrameworkExtension.php:259)
  at Symfony\Bundle\FrameworkBundle\DependencyInjection\FrameworkExtension->load()
     (/home/gregoire/dev/github.com/Faume-co/modules-shopify/vendor/symfony/dependency-injection/Compiler/MergeExtensionConfigurationPass.php:76)
  at Symfony\Component\DependencyInjection\Compiler\MergeExtensionConfigurationPass->process()
     (/home/gregoire/dev/github.com/Faume-co/modules-shopify/vendor/symfony/http-kernel/DependencyInjection/MergeExtensionConfigurationPass.php:45)
  at Symfony\Component\HttpKernel\DependencyInjection\MergeExtensionConfigurationPass->process()
     (/home/gregoire/dev/github.com/Faume-co/modules-shopify/vendor/symfony/dependency-injection/Compiler/Compiler.php:80)
  at Symfony\Component\DependencyInjection\Compiler\Compiler->compile()
     (/home/gregoire/dev/github.com/Faume-co/modules-shopify/vendor/symfony/dependency-injection/ContainerBuilder.php:767)
  at Symfony\Component\DependencyInjection\ContainerBuilder->compile()
     (/home/gregoire/dev/github.com/Faume-co/modules-shopify/vendor/symfony/http-kernel/Kernel.php:506)
  at Symfony\Component\HttpKernel\Kernel->initializeContainer()
     (/home/gregoire/dev/github.com/Faume-co/modules-shopify/vendor/symfony/http-kernel/Kernel.php:757)
  at Symfony\Component\HttpKernel\Kernel->preBoot()
     (/home/gregoire/dev/github.com/Faume-co/modules-shopify/vendor/symfony/http-kernel/Kernel.php:185)
  at Symfony\Component\HttpKernel\Kernel->handle()
     (/home/gregoire/dev/github.com/Faume-co/modules-shopify/vendor/symfony/runtime/Runner/Symfony/HttpKernelRunner.php:35)
  at Symfony\Component\Runtime\Runner\Symfony\HttpKernelRunner->run()
     (/home/gregoire/dev/github.com/Faume-co/modules-shopify/vendor/autoload_runtime.php:29)
  at require_once('/home/gregoire/dev/github.com/Faume-co/modules-shopify/vendor/autoload_runtime.php')
     (/home/gregoire/dev/github.com/Faume-co/modules-shopify/public/index.php:5)          

[nicolas-grekas]

Thank you @lyrixx.