"Internal System Error" on item submission - Dspace

[Sreejith !!!!]

Hi everyone,

I have been using my Dspace for the past one year. When I try to upload new item recently, I could not move to the 2nd part of the submission page. The following error message shown:

"Internal System Error"

The error which I identified from the dspace.log file is as follows:

2022-07-20 14:51:36,912 ERROR org.dspace.app.webui.servlet.SubmissionController @ Error loading step class'org.dspace.submit.step.DescribeStep':
java.lang.NullPointerException

    at org.dspace.submit.step.DescribeStep.readText(DescribeStep.java:691)
    at org.dspace.submit.step.DescribeStep.doProcessing(DescribeStep.java:285)
    at org.dspace.app.webui.submit.JSPStepManager.doStepEnd(JSPStepManager.java:399)
    at org.dspace.app.webui.submit.JSPStepManager.processStep(JSPStepManager.java:250)
    at org.dspace.app.webui.servlet.SubmissionController.doStep(SubmissionController.java:505)
    at org.dspace.app.webui.servlet.SubmissionController.doDSPost(SubmissionController.java:443)
    at org.dspace.app.webui.servlet.DSpaceServlet.processRequest(DSpaceServlet.java:122)
    at org.dspace.app.webui.servlet.DSpaceServlet.doPost(DSpaceServlet.java:80)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:652)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:733)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.dspace.app.webui.filter.RegisteredOnlyFilter.doFilter(RegisteredOnlyFilter.java:66)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.dspace.utils.servlet.DSpaceWebappServletFilter.doFilter(DSpaceWebappServletFilter.java:78)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:143)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
    at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:690)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:374)
    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:888)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1597)
    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    at java.lang.Thread.run(Thread.java:748)

Because of this, many uploading works are stuck in my library.

Please help me to sort out this issue.

Thank you.