diff --git a/vendor/Symfony/Component/Yaml/Dumper.php b/vendor/Symfony/Component/Yaml/Dumper.php
index 8709f8b..00445c7 100644
--- a/vendor/Symfony/Component/Yaml/Dumper.php
+++ b/vendor/Symfony/Component/Yaml/Dumper.php
@@ -11,6 +11,8 @@
 
 namespace Symfony\Component\Yaml;
 
+use Symfony\Component\Yaml\Inline;
+
 /**
  * Dumper dumps PHP variables to YAML strings.
  *
diff --git a/vendor/Symfony/Component/Yaml/Exception/DumpException.php b/vendor/Symfony/Component/Yaml/Exception/DumpException.php
index 9b3e6de..5b4700f 100644
--- a/vendor/Symfony/Component/Yaml/Exception/DumpException.php
+++ b/vendor/Symfony/Component/Yaml/Exception/DumpException.php
@@ -11,6 +11,8 @@
 
 namespace Symfony\Component\Yaml\Exception;
 
+use Symfony\Component\Yaml\Exception\RuntimeException;
+
 /**
  * Exception class thrown when an error occurs during dumping.
  *
diff --git a/vendor/Symfony/Component/Yaml/Exception/ParseException.php b/vendor/Symfony/Component/Yaml/Exception/ParseException.php
index 938097b..120ebc8 100644
--- a/vendor/Symfony/Component/Yaml/Exception/ParseException.php
+++ b/vendor/Symfony/Component/Yaml/Exception/ParseException.php
@@ -11,6 +11,8 @@
 
 namespace Symfony\Component\Yaml\Exception;
 
+use Symfony\Component\Yaml\Exception\RuntimeException;
+
 if (!defined('JSON_UNESCAPED_UNICODE')) {
     define('JSON_UNESCAPED_SLASHES', 64);
     define('JSON_UNESCAPED_UNICODE', 256);
diff --git a/vendor/Symfony/Component/Yaml/Exception/RuntimeException.php b/vendor/Symfony/Component/Yaml/Exception/RuntimeException.php
index 3573bf1..357d979 100644
--- a/vendor/Symfony/Component/Yaml/Exception/RuntimeException.php
+++ b/vendor/Symfony/Component/Yaml/Exception/RuntimeException.php
@@ -11,6 +11,8 @@
 
 namespace Symfony\Component\Yaml\Exception;
 
+use Symfony\Component\Yaml\Exception\ExceptionInterface;
+
 /**
  * Exception class thrown when an error occurs during parsing.
  *
diff --git a/vendor/Symfony/Component/Yaml/Inline.php b/vendor/Symfony/Component/Yaml/Inline.php
index 45978a1..982afcc 100644
--- a/vendor/Symfony/Component/Yaml/Inline.php
+++ b/vendor/Symfony/Component/Yaml/Inline.php
@@ -10,6 +10,8 @@
 
 namespace Symfony\Component\Yaml;
 
+use Symfony\Component\Yaml\Escaper;
+use Symfony\Component\Yaml\Unescaper;
 use Symfony\Component\Yaml\Exception\ParseException;
 use Symfony\Component\Yaml\Exception\DumpException;
 
diff --git a/vendor/Symfony/Component/Yaml/Parser.php b/vendor/Symfony/Component/Yaml/Parser.php
index d852cbf..5812a95 100644
--- a/vendor/Symfony/Component/Yaml/Parser.php
+++ b/vendor/Symfony/Component/Yaml/Parser.php
@@ -10,6 +10,7 @@
 
 namespace Symfony\Component\Yaml;
 
+use Symfony\Component\Yaml\Inline;
 use Symfony\Component\Yaml\Exception\ParseException;
 
 /**
@@ -90,7 +91,7 @@ class Parser
                 // array
                 if (!isset($values['value']) || '' == trim($values['value'], ' ') || 0 === strpos(ltrim($values['value'], ' '), '#')) {
                     $c = $this->getRealCurrentLineNb() + 1;
-                    $parser = new Parser($c);
+                    $parser = new self($c);
                     $parser->refs =& $this->refs;
                     $data[] = $parser->parse($this->getNextEmbedBlock(), $exceptionOnInvalidType, $objectSupport);
                 } else {
@@ -100,7 +101,7 @@ class Parser
                     ) {
                         // this is a compact notation element, add to next block and parse
                         $c = $this->getRealCurrentLineNb();
-                        $parser = new Parser($c);
+                        $parser = new self($c);
                         $parser->refs =& $this->refs;
 
                         $block = $values['value'];
@@ -143,7 +144,7 @@ class Parser
                             $value = $this->getNextEmbedBlock();
                         }
                         $c = $this->getRealCurrentLineNb() + 1;
-                        $parser = new Parser($c);
+                        $parser = new self($c);
                         $parser->refs =& $this->refs;
                         $parsed = $parser->parse($value, $exceptionOnInvalidType, $objectSupport);
 
@@ -180,7 +181,7 @@ class Parser
                         $data[$key] = null;
                     } else {
                         $c = $this->getRealCurrentLineNb() + 1;
-                        $parser = new Parser($c);
+                        $parser = new self($c);
                         $parser->refs =& $this->refs;
                         $data[$key] = $parser->parse($this->getNextEmbedBlock(), $exceptionOnInvalidType, $objectSupport);
                     }
diff --git a/vendor/Symfony/Component/Yaml/Yaml.php b/vendor/Symfony/Component/Yaml/Yaml.php
index c98f6ec..ccef5ae 100644
--- a/vendor/Symfony/Component/Yaml/Yaml.php
+++ b/vendor/Symfony/Component/Yaml/Yaml.php
@@ -11,6 +11,8 @@
 
 namespace Symfony\Component\Yaml;
 
+use Symfony\Component\Yaml\Parser;
+use Symfony\Component\Yaml\Dumper;
 use Symfony\Component\Yaml\Exception\ParseException;
 
 /**