Merge pull request #1215 from NatLibFi/fix-invalid-vocabid-404-error

Gracefully produce 404 error page for URLs with unknown vocabulary ID

index.php

@@ -49,7 +49,7 @@
         $vocab = $parts[1];
         try {
             $request->setVocab($parts[1]);
-        } catch (Exception $e) {
+        } catch (Exception | ValueError $e) {
             $request->setLang($controller->guessLanguage());
             $controller->invokeGenericErrorPage($request);
             return;