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我在配置炫技芝麻HTTP库下面的“设置RDF4J或芝麻HTTP库”这个网页的一部分，Virtuoso Sesame HTTP Repository Configuration and Usage炫技芝麻HTTP库配置，异常
它发生以下异常，我点击后，有一个问题“创建”按钮，我没有找到解决方案。 
在日志中的完整的堆栈跟踪是：
Feb 16, 2017 2:46:51 PM org.apache.catalina.core.StandardWrapperValve invoke
严重: Servlet.service() for servlet workbench threw exception
java.lang.NullPointerException
at org.openrdf.workbench.commands.CreateServlet.getConfigTemplate(CreateServlet.java:159)
at org.openrdf.workbench.commands.CreateServlet.createRepositoryConfig(CreateServlet.java:130)
at org.openrdf.workbench.commands.CreateServlet.doPost(CreateServlet.java:75)
at org.openrdf.workbench.base.TransformationServlet.service(TransformationServlet.java:95)
at org.openrdf.workbench.base.BaseServlet.service(BaseServlet.java:137)
at org.openrdf.workbench.proxy.ProxyRepositoryServlet.service(ProxyRepositoryServlet.java:104)
at org.openrdf.workbench.proxy.WorkbenchServlet.service(WorkbenchServlet.java:222)
at org.openrdf.workbench.proxy.WorkbenchServlet.handleRequest(WorkbenchServlet.java:151)
at org.openrdf.workbench.proxy.WorkbenchServlet.service(WorkbenchServlet.java:119)
at org.openrdf.workbench.proxy.WorkbenchGateway.service(WorkbenchGateway.java:131)
at org.openrdf.workbench.base.BaseServlet.service(BaseServlet.java:137)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.openrdf.workbench.proxy.CookieCacheControlFilter.doFilter(CookieCacheControlFilter.java:63)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:861)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:620)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Thread.java:745)
我试着“设置RDF4J或芝麻控制台库”部分创建一个演奏家RDF存储，还得到了一个错误： 
我的操作出了什么问题？我应该怎么做？
顺便说一下，我的芝麻是正常的，创建另一个RDF类型的商店是成功的，除了virtuoso。我已经通过brew安装了virtuoso，并且它工作正常。
欣赏。