Merge branch '7.2' into 7.3

* 7.2:
  [Translation] Add intl-icu fallback for MessageCatalogue metadata
  [Validator] update Dutch translation
  [ErrorHandler] Do not transform file to link if it does not exist

Author: fabpot

ErrorRenderer/HtmlErrorRenderer.php

@@ -233,6 +233,10 @@ private function formatFile(string $file, int $line, ?string $text = null): stri
             $text .= ' at line '.$line;
         }
 
+        if (!file_exists($file)) {
+            return $text;
+        }
+
         $link = $this->fileLinkFormat->format($file, $line);
 
         return \sprintf('<a href="%s" title="Click to open this file" class="file_link">%s</a>', $this->escape($link), $text);