[DX] Show the ParseException message in all YAML file loaders

src/Symfony/Component/DependencyInjection/Loader/YamlFileLoader.php

@@ -660,7 +660,7 @@ protected function loadFile($file)
         try {
             $configuration = $this->yamlParser->parseFile($file, Yaml::PARSE_CONSTANT | Yaml::PARSE_CUSTOM_TAGS);
         } catch (ParseException $e) {
-            throw new InvalidArgumentException(sprintf('The file "%s" does not contain valid YAML: '.$e->getMessage(), $file), 0, $e);
+            throw new InvalidArgumentException(sprintf('The file "%s" does not contain valid YAML', $file).': '.$e->getMessage(), 0, $e);
         } finally {
             restore_error_handler();
         }

src/Symfony/Component/Routing/Loader/YamlFileLoader.php

@@ -66,7 +66,7 @@ public function load($file, $type = null)
         try {
             $parsedConfig = $this->yamlParser->parseFile($path);
         } catch (ParseException $e) {
-            throw new \InvalidArgumentException(sprintf('The file "%s" does not contain valid YAML.', $path), 0, $e);
+            throw new \InvalidArgumentException(sprintf('The file "%s" does not contain valid YAML', $path).': '.$e->getMessage(), 0, $e);
         } finally {
             restore_error_handler();
         }

src/Symfony/Component/Translation/Loader/YamlFileLoader.php

@@ -47,7 +47,7 @@ protected function loadResource($resource)
         try {
             $messages = $this->yamlParser->parseFile($resource);
         } catch (ParseException $e) {
-            throw new InvalidResourceException(sprintf('Error parsing YAML, invalid file "%s".', $resource), 0, $e);
+            throw new InvalidResourceException(sprintf('The file "%s" does not contain valid YAML', $resource).': '.$e->getMessage(), 0, $e);
         } finally {
             restore_error_handler();
         }

src/Symfony/Component/Validator/Mapping/Loader/YamlFileLoader.php

@@ -124,7 +124,7 @@ private function parseFile($path)
         try {
             $classes = $this->yamlParser->parseFile($path, Yaml::PARSE_CONSTANT);
         } catch (ParseException $e) {
-            throw new \InvalidArgumentException(sprintf('The file "%s" does not contain valid YAML.', $path), 0, $e);
+            throw new \InvalidArgumentException(sprintf('The file "%s" does not contain valid YAML', $path).': '.$e->getMessage(), 0, $e);
         } finally {
             restore_error_handler();
         }