diff --git a/core/lib/Drupal/Core/Asset/LibraryDiscoveryParser.php b/core/lib/Drupal/Core/Asset/LibraryDiscoveryParser.php
index ef98adc..a3dbd82 100644
--- a/core/lib/Drupal/Core/Asset/LibraryDiscoveryParser.php
+++ b/core/lib/Drupal/Core/Asset/LibraryDiscoveryParser.php
@@ -65,13 +65,11 @@ public function buildByExtension($extension) {
       $path = $this->drupalGetPath($extension_type, $extension);
     }
 
-    $library_file = $path . '/' . $extension . '.libraries.yml';
-    $libraries = $this->parseLibraryInfo($extension, $library_file);
-
+    $libraries = $this->parseLibraryInfo($extension, $path);
 
     foreach ($libraries as $id => &$library) {
       if (!isset($library['js']) && !isset($library['css']) && !isset($library['settings'])) {
-        throw new IncompleteLibraryDefinitionException(sprintf("Incomplete library definition for '%s' in %s", $id, $library_file));
+        throw new IncompleteLibraryDefinitionException(sprintf("Incomplete library definition for '%s'", $id));
       }
       $library += array('dependencies' => array(), 'js' => array(), 'css' => array());
 
@@ -88,7 +86,7 @@ public function buildByExtension($extension) {
 
       // If this is a 3rd party library, the license info is required.
       if (isset($library['remote']) && !isset($library['license'])) {
-        throw new LibraryDefinitionMissingLicenseException(sprintf("Missing license information in library definition for '%s' in %s: it has a remote, but no license.", $id, $library_file));
+        throw new LibraryDefinitionMissingLicenseException(sprintf("Missing license information in library definition for '%s': it has a remote, but no license.", $id));
       }
 
       // Assign Drupal's license to libraries that don't have license info.
@@ -209,8 +207,8 @@ public function buildByExtension($extension) {
    *
    * @param string $extension
    *   The name of the extension that registered a library.
-   * @param string $library_file
-   *   The relative filename to the DRUPAL_ROOT of the wanted library file.
+   * @param string $path
+   *   The relative path to the extension.
    *
    * @return array
    *   An array of parsed library data.
@@ -218,8 +216,10 @@ public function buildByExtension($extension) {
    * @throws \Drupal\Core\Asset\Exception\InvalidLibraryFileException
    *   Thrown when a parser exception got thrown.
    */
-  protected function parseLibraryInfo($extension, $library_file) {
+  protected function parseLibraryInfo($extension, $path) {
     $libraries = [];
+
+    $library_file = $path . '/' . $extension . '.libraries.yml';
     if (file_exists(DRUPAL_ROOT . '/' . $library_file)) {
       try {
         $libraries = Yaml::decode(file_get_contents(DRUPAL_ROOT . '/' . $library_file));