Mohammad Hassany

> java.lang.StringIndexOutOfBoundsException: String index out of range: -1 > My code looks like this > > ``` > String url=urls.get(options_list.getSelectionModel().getSelectedIndex()); > String filename = file.getAbsolutePath(); > DownloadManager downloadManager = DownloadManager.getInstance();...

@vogella @ibauersachs's solution worked for me, give it a try.

check the readme: https://github.com/therootcompany/greenlock-express.js#3-how-to-use-non-standard-ports-not-80-443 ## 3. How to use non-standard ports (not 80, 443)? You don't. Not usually. Let's Encrypt **REQUIRES port 80** for HTTP-01 challenges. But if you're using...