Ionic 4 Uploadcare ERR_CONNECTION_REFUSED

I'm getting this error when i try to upload some picture via Ionic 4 using Uploadcare (Cannot display the image because of the error) How could I fix that? Thanks you so much

UPDATED:

Now im having this error without doing anything... don't know why

Solution

Finally it has been resolved... Maybe some cache or something like that (I was also cleaning cache on google), but didnt get any error on Google Chrome, i was constantly doing force-refresh but still the problems before... Now its uploading and didnt get any error. Thanks you so much anyway, i was also restarting the ionic server furthermore...