Upgrade from 6.4.0 to 6.4.2 failed with error:
./upgrade.sh: line 85: /usr/lib/jvm/java-1.8.0-openjdk-22.214.171.124-8.b10.el7_5.x86_64/bin/java: No such file or directory
Release : 6.4.0
It appeared to be an issue with the wrong JAVA_HOME variable.
Advised for them to verify the java path was correct and they were able to move past this error.
Verify JAVA_HOME is set correctly by checking
Once set correctly