Currently I am unable to open TopCoder Arena on Ubuntu 18.04. It gives an error message
net.sourceforge.jnlp.LaunchException: Fatal: Launch Error: Could not launch JNLP file. The application has not been initialized, for more information execute javaws/browser from the command line and send a bug report. at net.sourceforge.jnlp.Launcher.launchApplication(Launcher.java:582) at net.sourceforge.jnlp.Launcher$TgThread.run(Launcher.java:945)
Earlier it was working fine. But I guess, the recent updates are the issue for the problem. I have tried the solutions from this two sources https://forums.linuxmint.com/viewtopic.php?t=294555 and AskUbuntu . Till now I am unable to find a way to start the Arena. I have also tried solutions from this blog https://codeforces.com/blog/entry/13613? and this thread TopCoder but none of them is working. Please help !!