Unable to view accepted submission and Collection/Item taking time to load, Display & download

[Indu Bhushan Tamrakar]

Dear Sir,

I am unable to view accepted submission under MY Dspace  and It is taking too much time to load and display the collection and Items. Item download takes too much time. My server is in a proxy environment with private IP like 10.1*.1*.1* .

Details of software's version and log are attached below for your reference.

Please help me as soon as possible.

With Regards

Indu Bhushan

SIRC, RRCAT, Indore MP

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Red Hat Enterprise Linux Server release 6.6 (Santiago)

DSpace version:  4.1
  SCM revision:  ${buildNumber} SCM branch:  UNKNOWN_BRANCH
  OS:  Linux(i386) version 2.6.18-164.el5PAE
  Applications:
         Discovery:  enabled.
         JRE:  Oracle Corporation version 1.8.0_31
         Ant version:  Apache Ant(TM) version 1.8.2 compiled on December 20 2010
         Maven version:  3.0.5

Log file error
2021-09-16 07:44:18,222 ERROR org.dspace.statistics.SolrLoggerUsageEventListener @ Server at http://10.10.2.12:8080/solr/statistics returned non ok status:407, message:Proxy Authentication Required

2021-09-16 07:45:17,583 ERROR org.dspace.statistics.SolrLoggerUsageEventListener @ Server at http://10.10.2.12:8080/solr/statistics returned non ok status:503, message:Service Unavailable

2021-09-16 13:00:31,139 ERROR org.dspace.discovery.SolrServiceImpl @ anonymous:session_id=04E92231E1FC700EDA5A7BCDE6D132CF:ip_addr=10.130.2.145:Error while retrieving DSpace object from discovery index:Handle\colon; 123456789/5336

2021-09-20 08:40:29,496 INFO  org.dspace.app.webui.servlet.MyDSpaceServlet @ in...@rrcat.gov.in:session_id=FCCD4CA1D4211DB999C7E313ABD54C62:ip_addr=10.130.2.145:view_own_submissions:count=3946
2021-09-20 08:40:36,111 WARN  org.dspace.content.DCDate @ Mangled date: ?  ..failed all attempts to parse as date.
2021-09-20 08:40:36,116 WARN  org.dspace.app.webui.servlet.InternalErrorServlet @ :session_id=FCCD4CA1D4211DB999C7E313ABD54C62:internal_error:-- URL Was: http://10.10.2.12:8080/dspace/mydspace
-- Method: POST
-- Parameters were:
-- submit_own: "View Accepted Submissions"
-- step: "0"

org.apache.jasper.JasperException: java.lang.NullPointerException
        at org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:549)
        at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:470)
        at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:395)
        at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:339)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
        at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
        at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:748)
        at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:486)
        at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:411)
        at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:338)
        at org.dspace.app.webui.util.JSPManager.showJSP(JSPManager.java:60)
        at org.dspace.app.webui.servlet.MyDSpaceServlet.showPreviousSubmissions(MyDSpaceServlet.java:795)
        at org.dspace.app.webui.servlet.MyDSpaceServlet.processMainPage(MyDSpaceServlet.java:185)
        at org.dspace.app.webui.servlet.MyDSpaceServlet.doDSPost(MyDSpaceServlet.java:94)
        at org.dspace.app.webui.servlet.DSpaceServlet.processRequest(DSpaceServlet.java:115)
        at org.dspace.app.webui.servlet.DSpaceServlet.doPost(DSpaceServlet.java:73)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:646)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)