WARNING: Untrapped Error in Servlet
java.lang.NullPointerException
        at hudson.plugins.scm_sync_configuration.ScmSyncConfigurationPlugin.getInstance(ScmSyncConfigurationPlugin.java:272)
        at hudson.plugins.scm_sync_configuration.extensions.ScmSyncConfigurationFilter.doFilter(ScmSyncConfigurationFilter.java:25)
        at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:98)
        at hudson.util.PluginServletFilter.doFilter(PluginServletFilter.java:87)
        at winstone.FilterConfiguration.execute(FilterConfiguration.java:194)
        at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:366)
        at hudson.security.csrf.CrumbFilter.doFilter(CrumbFilter.java:47)
        at winstone.FilterConfiguration.execute(FilterConfiguration.java:194)
        at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:366)
        at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:84)
        at hudson.security.UnwrapSecurityExceptionFilter.doFilter(UnwrapSecurityExceptionFilter.java:51)
        at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
        at org.acegisecurity.ui.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:166)
        at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
        at org.acegisecurity.providers.anonymous.AnonymousProcessingFilter.doFilter(AnonymousProcessingFilter.java:125)
        at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
        at org.acegisecurity.ui.rememberme.RememberMeProcessingFilter.doFilter(RememberMeProcessingFilter.java:135)
        at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
        at org.acegisecurity.ui.AbstractProcessingFilter.doFilter(AbstractProcessingFilter.java:271)
        at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
        at org.acegisecurity.ui.basicauth.BasicProcessingFilter.doFilter(BasicProcessingFilter.java:173)
        at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
        at jenkins.security.ApiTokenFilter.doFilter(ApiTokenFilter.java:63)
        at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
        at org.acegisecurity.context.HttpSessionContextIntegrationFilter.doFilter(HttpSessionContextIntegrationFilter.java:249)
        at hudson.security.HttpSessionContextIntegrationFilter2.doFilter(HttpSessionContextIntegrationFilter2.java:66)
        at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
        at hudson.security.ChainedServletFilter.doFilter(ChainedServletFilter.java:76)
        at hudson.security.HudsonFilter.doFilter(HudsonFilter.java:164)
        at winstone.FilterConfiguration.execute(FilterConfiguration.java:194)
        at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:366)
        at org.kohsuke.stapler.compression.CompressionFilter.doFilter(CompressionFilter.java:50)
        at winstone.FilterConfiguration.execute(FilterConfiguration.java:194)
        at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:366)
        at hudson.util.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:81)
        at winstone.FilterConfiguration.execute(FilterConfiguration.java:194)
        at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:366)
        at winstone.RequestDispatcher.forward(RequestDispatcher.java:331)
        at winstone.RequestHandlerThread.processRequest(RequestHandlerThread.java:215)
        at winstone.RequestHandlerThread.run(RequestHandlerThread.java:138)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
        at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
        at java.util.concurrent.FutureTask.run(FutureTask.java:138)
        at winstone.BoundedExecutorService$1.run(BoundedExecutorService.java:77)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
        at java.lang.Thread.run(Thread.java:662)