fix: handle error for reading apps

cli/app.go

@@ -197,6 +197,9 @@ can take some time.
 		}
 
 		apps, err := config.GetApps(appFiles)
+		if err != nil {
+			logrus.Fatal(err)
+		}
 		sort.Sort(config.ByServerAndType(apps))
 
 		statuses := map[string]string{}