Bug#993798: icedtea-netx: upgrade to debian 11 makes an Exception rise: A fatal error occurred while trying to verify jars.

[Josep Lladonosa i Capell]

Package: icedtea-netx
Version: 1.8.4-1
Severity: important
X-Debbugs-Cc: jlladonosa at gmail.com

Dear Maintainer,

I upgraded a Debian 10.10 to Debian 11 (bullseye).

After this, a remote Java application stopped running. It was running perfectly on Debian 10. In fact
I have checked this on a virtualized Debian 10.8 and it runs perfectly.

javaws launch reports this:
++++++++++++++++++++++++++++++++++++++++++++++++
net.sourceforge.jnlp.LaunchException: Fatal: Initialization Error: Could not initialize application. The application has not been initialized, for more information execute javaws from the command line.
	at java.desktop/net.sourceforge.jnlp.Launcher.createApplication(Launcher.java:822)
	at java.desktop/net.sourceforge.jnlp.Launcher.launchApplication(Launcher.java:531)
	at java.desktop/net.sourceforge.jnlp.Launcher$TgThread.run(Launcher.java:945)
Caused by: net.sourceforge.jnlp.LaunchException: Fatal: Initialization Error: A fatal error occurred while trying to verify jars. An exception has been thrown in class JarCertVerifier. Being unable to read the cacerts or trusted.certs files could be a possible cause for this exception.: zip file is empty
	at java.desktop/net.sourceforge.jnlp.runtime.JNLPClassLoader.initializeResources(JNLPClassLoader.java:739)
	at java.desktop/net.sourceforge.jnlp.runtime.JNLPClassLoader.<init>(JNLPClassLoader.java:338)
	at java.desktop/net.sourceforge.jnlp.runtime.JNLPClassLoader.createInstance(JNLPClassLoader.java:421)
	at java.desktop/net.sourceforge.jnlp.runtime.JNLPClassLoader.getInstance(JNLPClassLoader.java:495)
	at java.desktop/net.sourceforge.jnlp.runtime.JNLPClassLoader.getInstance(JNLPClassLoader.java:468)
	at java.desktop/net.sourceforge.jnlp.Launcher.createApplication(Launcher.java:814)
	... 2 more
++++++++++++++++++++++++++++++++++++++++++++++++
 
-- System Information:
Debian Release: 11.0
  APT prefers stable
  APT policy: (995, 'stable'), (500, 'stable-security'), (500, 'proposed-updates')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 5.14.0 (SMP w/8 CPU threads)
Locale: LANG=ca_AD.UTF-8, LC_CTYPE=ca_AD.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /binash
Init: systemd (via /run/systemd/system)

Versions of packages icedtea-netx depends on:
ii  default-jre      2:1.11-72
ii  librhino-java    1.7.7.2-3
ii  libtagsoup-java  1.2.1+-1.1

icedtea-netx recommends no packages.

icedtea-netx suggests no packages.

-- no debconf information