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diff --git a/vendor/symfony/dependency-injection/Compiler/DefinitionErrorExceptionPass.php b/vendor/symfony/dependency-injection/Compiler/DefinitionErrorExceptionPass.php
new file mode 100644
index 000000000..73b5d1d57
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+++ b/vendor/symfony/dependency-injection/Compiler/DefinitionErrorExceptionPass.php
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+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\DependencyInjection\Compiler;
+
+use Symfony\Component\DependencyInjection\Definition;
+use Symfony\Component\DependencyInjection\Exception\RuntimeException;
+
+/**
+ * Throws an exception for any Definitions that have errors and still exist.
+ *
+ * @author Ryan Weaver <ryan@knpuniversity.com>
+ */
+class DefinitionErrorExceptionPass extends AbstractRecursivePass
+{
+    /**
+     * {@inheritdoc}
+     */
+    protected function processValue($value, $isRoot = false)
+    {
+        if (!$value instanceof Definition || empty($value->getErrors())) {
+            return parent::processValue($value, $isRoot);
+        }
+
+        // only show the first error so the user can focus on it
+        $errors = $value->getErrors();
+        $message = reset($errors);
+
+        throw new RuntimeException($message);
+    }
+}