fix(tautulli): only test connection if hostname is defined (#3573)

server/routes/settings/index.ts

@@ -254,6 +254,7 @@ settingsRoutes.post('/tautulli', async (req, res, next) => {
 
   Object.assign(settings.tautulli, req.body);
 
+  if (settings.tautulli.hostname) {
     try {
       const tautulliClient = new TautulliAPI(settings.tautulli);
 
@@ -274,6 +275,7 @@ settingsRoutes.post('/tautulli', async (req, res, next) => {
         message: 'Unable to connect to Tautulli.',
       });
     }
+  }
 
   return res.status(200).json(settings.tautulli);
 });