java.lang.NullPointerException

Stack Overflow | YJ. Yang | 2 months ago
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  1. 0

    Unable to upload webdatacommons example file into OpenRDF Sesame 2.7.0 (seemingly) because of encoded Chinese characters

    Stack Overflow | 4 years ago | Ravish Bhagdev
    org.openrdf.workbench.exceptions.BadRequestException: '洪雄熊' was not recognised as a language literal, and could not be verified, with language zh_tw [line 3931]
  2. 0

    Ontop: Expected 'ref' parameter in request

    GitHub | 3 months ago | Iranox
    org.openrdf.workbench.exceptions.BadRequestException: Expected 'ref' parameter in request.
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  4. 0

    NoSuchMethodError: com.fasterxml.jackson.core.JsonFactory.requiresPropertyOrdering

    GitHub | 12 months ago | JensPiegsa
    java.lang.NoSuchMethodError: com.fasterxml.jackson.core.JsonFactory.requiresPropertyOrdering()Z

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    Root Cause Analysis

    1. java.lang.NullPointerException

      No message provided

      at org.openrdf.workbench.commands.CreateServlet.getConfigTemplate()
    2. org.openrdf.workbench
      BaseServlet.service
      1. org.openrdf.workbench.commands.CreateServlet.getConfigTemplate(CreateServlet.java:159)
      2. org.openrdf.workbench.commands.CreateServlet.createRepositoryConfig(CreateServlet.java:130)
      3. org.openrdf.workbench.commands.CreateServlet.doPost(CreateServlet.java:75)
      4. org.openrdf.workbench.base.TransformationServlet.service(TransformationServlet.java:95)
      5. org.openrdf.workbench.base.BaseServlet.service(BaseServlet.java:137)
      6. org.openrdf.workbench.proxy.ProxyRepositoryServlet.service(ProxyRepositoryServlet.java:104)
      7. org.openrdf.workbench.proxy.WorkbenchServlet.service(WorkbenchServlet.java:222)
      8. org.openrdf.workbench.proxy.WorkbenchServlet.handleRequest(WorkbenchServlet.java:151)
      9. org.openrdf.workbench.proxy.WorkbenchServlet.service(WorkbenchServlet.java:119)
      10. org.openrdf.workbench.proxy.WorkbenchGateway.service(WorkbenchGateway.java:131)
      11. org.openrdf.workbench.base.BaseServlet.service(BaseServlet.java:137)
      11 frames
    3. Glassfish Core
      ApplicationFilterChain.doFilter
      1. org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
      2. org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
      2 frames
    4. org.openrdf.workbench
      CookieCacheControlFilter.doFilter
      1. org.openrdf.workbench.proxy.CookieCacheControlFilter.doFilter(CookieCacheControlFilter.java:63)
      1 frame
    5. Glassfish Core
      CoyoteAdapter.service
      1. org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
      2. org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
      3. org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
      4. org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
      5. org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
      6. org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
      7. org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
      8. org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
      8 frames
    6. Grizzly HTTP
      JIoEndpoint$Worker.run
      1. org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:861)
      2. org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:620)
      3. org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
      3 frames
    7. Java RT
      Thread.run
      1. java.lang.Thread.run(Thread.java:745)
      1 frame