After Demantra Engine setup, getting error libEngineManager.so: wrong ELF class: ELFCLASS64

In

EngineManagerPreRunLog.txt under $ORACLE_HOME/j2ee/home getting the following error

Engine Manager Java Wrapper Error

java.lang.UnsatisfiedLinkError: ................/engine_root/Engine/lib/libEngineManager.so: ............/engine_root/Engine/lib/libEngineManager.so: wrong ELF class: ELFCLASS64

        at java.lang.ClassLoader$NativeLibrary.load(Native Method)

        at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1751)

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libEngineManager.so can not be loaded.