java.lang.IllegalArgumentException: Invalid characters in hostname
   at java.net.HostPortrange.toLowerCase(HostPortrange.java:189)
   at java.net.HostPortrange.<init>(HostPortrange.java:150)
   at java.net.URLPermission$Authority.<init>(URLPermission.java:481)
   at java.net.URLPermission.parseURI(URLPermission.java:449)
   at java.net.URLPermission.init(URLPermission.java:170)
   at java.net.URLPermission.<init>(URLPermission.java:166)
   at sun.net.www.protocol.http.HttpURLConnection.URLtoSocketPermission(HttpURLConnection.java:1031)
   at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1424)
   at com.sun.webkit.network.URLLoader.close(URLLoader.java:572)
   at com.sun.webkit.network.URLLoader.doRun(URLLoader.java:172)
   at com.sun.webkit.network.URLLoader.lambda$run$87(URLLoader.java:127)
   at com.sun.webkit.network.URLLoader$$Lambda$170/10530859.run(URLLoader.java:0)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at com.sun.webkit.network.URLLoader.run(URLLoader.java:126)
   at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
   at java.util.concurrent.FutureTask.run(FutureTask.java:266)
   at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
   at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
   at java.lang.Thread.run(Thread.java:745)