我在注册新用户时遇到问题。当我按下提交按钮时，我收到 500 内部系统错误。如果我通过管理面板添加新用户，我也无法登录（写我的密码错误）。测试电子邮件工作正常。一些日志：
dspace.log：
document.getElementById('input1').innerHTML
Tomcat 日志：
2021-06-10 14:59:16,256 WARN org.dspace.app.webui.servlet.InternalErrorServlet @ :session_id=870C323E76A5638F54DDF3C2B13C2D14:internal_error:-- URL Was: https://somesite.com/register
-- Method: POST
-- Parameters were:
-- step: "1"
-- netid: "Somename"
-- password: "12345678"
-- email: "interestingmail@gmail.com"
-- submit: "submit"
java.lang.NullPointerException
at java.util.Hashtable.put(Unknown Source)
at org.dspace.app.webui.servlet.RegisterServlet.processEnterEmail(RegisterServlet.java:298)
at org.dspace.app.webui.servlet.RegisterServlet.doDSPost(RegisterServlet.java:172)
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:660)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
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.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:199)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:475)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:625)
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:498)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:796)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1372)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Unknown Source)
如果需要更多日志或您知道如何修复它，请写信。