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I’m updating the Re3gistry installer script. Re3gistry is a java8 software and requires deploying two apps into tomcat (re3gistry2 and re3gistry2API). I made some changes in the installer but arrived at the following error.

-Jul-2022 18:49:51.207 SEVERE [http-nio-8080-exec-7] org.apache.catalina.core.ApplicationDispatcher.invoke Servlet.service() for servlet [jsp] threw exception
        java.lang.UnsupportedClassVersionError: org/eclipse/jdt/internal/compiler/env/INameEnvironment has been compiled by a more recent version of the Java Runtime (class file version 55.0), this version of the Java Runtime only recognizes class file versions up to 52.0
                at java.lang.ClassLoader.defineClass1(Native Method)
                at java.lang.ClassLoader.defineClass(ClassLoader.java:756)
                at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
                at java.net.URLClassLoader.defineClass(URLClassLoader.java:473)
                at java.net.URLClassLoader.access$100(URLClassLoader.java:74)

After some research, I found out that tomcat9 looks like it does not have support for version 52 (java 8) in Ubuntu 22.04 LTS. If I’m not wrong, OSGeo Live is based on this version. A thread about this issue:

​https://bugs.launchpad.net/ubuntu/+source/tomcat9/+bug/1972829

I’m not sure how to approach this issue, if it should imply changes in OSGeo Live base version or if we should try to install a different tomcat version in the re3gistry installer or try a workaround as it is explained in the last thread.

Thanks for your help in advance.

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