Make compatible with newer Symfony versions

src/lib/Herrera/Wise/Loader/YamlFileLoader.php

@@ -26,6 +26,9 @@ public function supports($resource, $type = null)
      */
     protected function doLoad($file)
     {
-        return Parser::parse($file);
+        if (!file_exists($file) || !is_readable($file)) {
+            throw new \InvalidArgumentException(sprintf('Unable to read file: %s', $file));
+        }
+        return Parser::parse(file_get_contents($file));
     }
 }

src/lib/Herrera/Wise/Wise.php

@@ -212,6 +212,10 @@ public function load($resource, $type = null, $require = false)
             );
 
             if ($cache->isFresh()) {
+                if (method_exists($cache, 'getPath')) {
+                    /** @noinspection PhpIncludeInspection */
+                    return require $cache->getPath();
+                }
                 /** @noinspection PhpIncludeInspection */
                 return require $cache;
             }