As it is stated on main page "IMPORTANT: Java 11 is required" https://openmeetings.apache.org/
To run this version use scripts from `bin` folder On Sun, 12 Apr 2020 at 02:40, ratatouille <ratatoui...@bitclusive.de> wrote: > Hello! > > I try to run apache-openmeetings-5.0.0-M3 on a CentOS7-Server. > Is this also an Tomcat-embedded version? There is no ./red5.sh > > $ ./admin.sh > Error: A JNI error has occurred, please check your installation and try > again > Exception in thread "main" java.lang.UnsupportedClassVersionError: > org/apache/openmeetings/cli/Admin 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 > > $ java -version > openjdk version "1.8.0_242" > OpenJDK Runtime Environment (build 1.8.0_242-b08) > OpenJDK 64-Bit Server VM (build 25.242-b08, mixed mode) > > $ echo $JAVA_HOME > /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.212.b04-0.el7_6.x86_64 > > $ echo $JRE_HOME > <empty output> > > yum does not find a JRE. > > Kind regards > > Andreas > -- Best regards, Maxim