Feldet error : "java.lang.ExceptionInInitializerError"

I have completed the SP initiated SSO integration with IDP partner using Fedlet as Service Provider. Later, when I moved the fedlet configuration directory to a different location, it is throwing the below exception:

java.lang.ExceptionInInitializerError
at jsp_servlet._saml2._jsp.__fedletssoinit._jspService(__fedletssoinit.java:132)
at weblogic.servlet.jsp.JspBase.service(JspBase.java:34)
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:301)
Truncated. see log file for complete stacktrace
Caused By: java.lang.NullPointerException

Changes I made:

• Moved the fedlet configuration directory to a different location.

• Updated the startWebLogic.sh script to include the new fedlet home as shown below.

JAVA_OPTIONS="${JAVA_OPTIONS} -Dcom.sun.identity.fedlet.home=/apps/tap/Oracle1036/user_projects/domains/tap_pit1/config/fedlet"

export JAVA_OPTIONS

• Restart the WebLogic server.
• Access the fedlet SP initiated SSO URL.

Troubleshooting:
Upon starting the weblogic server, the new fedlet home is not visible as JAVA_OPTIONS.

Fix:

• Update startWebLogic.sh script to include fedlet home parameter directly in java execution line as shown below. Update in the same manner in all the other java execution lines present in the script.

echo "${JAVA_HOME}/bin/java ${JAVA_VM} ${MEM_ARGS} -Dweblogic.Name=${SERVER_NAME} -Djava.security.policy=${WL_HOME}/server/lib/weblogic.policy ${JAVA_OPTIONS} -Dcom.sun.identity.fedlet.home=${DOMAIN_HOME}/config/fedlet ${PROXY_SETTINGS} ${SERVER_CLASS}"

• Restart the WebLogic server. Make sure that fedlet home appears in java options by using ps -ef | grep java