prevent fast retry when questrade login fails

main.go

@@ -71,7 +71,9 @@ func main() {
 		// Questrade authentication needs to be refreshed and persistentData written to disk in case app restarts
 		questradeClient, err = questrade.NewClient(persistentData.QuestradeRefreshToken)
 		if err != nil {
-			log.Fatalf("failed to create questrade client: %v", err)
+			log.Printf("failed to create questrade client: %v", err)
+			time.Sleep(time.Minute * 5) // prevent multiple fast login failures
+			continue
 		}
 
 		persistentData.QuestradeRefreshToken = questradeClient.Credentials.RefreshToken