Rundeck cannot start on RedHat Linux 8

[saika0721]

I downloaded rundeck community 5.0.0 rpm on RedHat Linux 8 but failure to start with below errors.

`#
java -version

openjdk version "1.8.0_392"
OpenJDK Runtime Environment (build 1.8.0_392-b08)
OpenJDK 64-Bit Server VM (build 25.392-b08, mixed mode)
`

`#
rpm -qa|grep java

java-1.8.0-openjdk-headless-1.8.0.392.b08-4.el8.x86_64
java-1.8.0-openjdk-1.8.0.392.b08-4.el8.x86_64
tzdata-java-2023c-1.el8.noarch
javapackages-filesystem-5.3.0-1.module+el8+2447+6f56d9a6.noarch
`

Exception in thread "main" java.lang.UnsupportedClassVersionError: rundeckapp/Application 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)
at java.net.URLClassLoader$1.run(URLClassLoader.java:369)
at java.net.URLClassLoader$1.run(URLClassLoader.java:363)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:362)
at java.lang.ClassLoader.loadClass(ClassLoader.java:418)
at org.springframework.boot.loader.LaunchedURLClassLoader.loadClass(LaunchedURLClassLoader.java:151)
at java.lang.ClassLoader.loadClass(ClassLoader.java:351)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:348)
at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:46)
at org.springframework.boot.loader.Launcher.launch(Launcher.java:108)
at org.springframework.boot.loader.Launcher.launch(Launcher.java:58)
at org.springframework.boot.loader.WarLauncher.main(WarLauncher.java:59)