When I click My Dspace, got an error. how do i fix this problem

use lastest dspace-5_x_x-cris version

dspace log:
2018-03-15 11:45:27,506 ERROR 
org.dspace.app.cris.integration.ORCIDAuthority @ 
java.lang.NullPointerException
at org.dspace.authority.orcid.OrcidService.get(OrcidService.java:1637)
at 
org.dspace.authority.orcid.OrcidService.getAuthorityValuesFromOrcidResults(OrcidService.java:583)
at 
org.dspace.authority.orcid.OrcidService.queryOrcidBioByFamilyNameAndGivenName(OrcidService.java:425)
at 
org.dspace.app.cris.integration.ORCIDAuthority.addExternalResults(ORCIDAuthority.java:41)
at 
org.dspace.app.cris.integration.ORCIDAuthority.getMatches(ORCIDAuthority.java:34)
at 
org.dspace.content.authority.ChoiceAuthorityManager.getMatches(ChoiceAuthorityManager.java:291)
at org.dspace.app.cris.util.Researcher.getMatches(Researcher.java:259)
at 
org.dspace.app.webui.servlet.MyDSpaceServlet.showMainPage(MyDSpaceServlet.java:854)
at 
org.dspace.app.webui.servlet.MyDSpaceServlet.doDSGet(MyDSpaceServlet.java:100)
at 
org.dspace.app.webui.servlet.DSpaceServlet.processRequest(DSpaceServlet.java:119)
at org.dspace.app.webui.servlet.DSpaceServlet.doGet(DSpaceServlet.java:67)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:635)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
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:52)
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:198)
at 
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at 
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:504)
at 
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
at 
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
at 
org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:650)
at 
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
at 
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342)
at 
org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:803)
at 
org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
at 
org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:790)
at 
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1459)
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)

2018-03-15 11:45:27,509 WARN  
org.dspace.app.webui.servlet.InternalErrorServlet @ 
:session_id=E35FC4C4CB01537706DEB1118F46432C:internal_error:-- URL Was: 
http://192.168.70.142:9090/jspui/mydspace
-- Method: GET
-- Parameters were:

java.lang.NullPointerException
at 
org.dspace.app.webui.servlet.MyDSpaceServlet.showMainPage(MyDSpaceServlet.java:863)
at 
org.dspace.app.webui.servlet.MyDSpaceServlet.doDSGet(MyDSpaceServlet.java:100)
at 
org.dspace.app.webui.servlet.DSpaceServlet.processRequest(DSpaceServlet.java:119)
at org.dspace.app.webui.servlet.DSpaceServlet.doGet(DSpaceServlet.java:67)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:635)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
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:52)
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:198)
at 
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at 
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:504)
at 
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
at 
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
at 
org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:650)
at 
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
at 
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342)
at 
org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:803)
at 
org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
at 
org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:790)
at 
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1459)
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)

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