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    Jackson 1.x and Jackson 2.x annotations are in different places inside Java, so this can be either import related (check if you imported the right one) or you might have different versions in your classpath causing conflict.

Solutions on the web

via Jenkins JIRA by Christian Galsterer, 1 year ago
java.lang.RuntimeException: Failed to instantiate class hudson.plugins.logfilesizechecker.LogfilesizecheckerWrapper from {"failBuild":"false","setOwn":false}
via Jenkins JIRA by Christian Galsterer, 1 year ago
java.lang.RuntimeException: Failed to instantiate class hudson.plugins.logfilesizechecker.LogfilesizecheckerWrapper from {"failBuild":"false","setOwn":false}
via jenkins-ci.org by Unknown author, 1 year ago
java.lang.RuntimeException: Failed to instantiate class hudson.plugins.logfilesizechecker.LogfilesizecheckerWrapper from { : , : }
via Google Groups by rett...@in.tum.de (JIRA), 2 years ago
java.lang.IllegalArgumentException: Invalid format: <span class="code-quote" style="color: #009100">&quot;2015-07-31T18:58:18+0200&quot;</span> is malformed at <span class="code-quote" style="color: #009100">&quot;+0200&quot;</span>
via Jenkins JIRA by andrey shkola, 1 year ago
java.lang.RuntimeException: Failed to instantiate class com.hp.application.automation.tools.run.RunFromAlmBuilder from {"stapler-class":"com.hp.application.automation.tools.run.RunFromAlmBuilder","kind":"com.hp.application.automation.tools.run.RunFromAlmBuilder"}
via Jenkins JIRA by andrey shkola, 1 year ago
java.lang.RuntimeException: Failed to instantiate class com.hp.application.automation.tools.run.RunFromAlmBuilder from {"stapler-class":"com.hp.application.automation.tools.run.RunFromAlmBuilder","kind":"com.hp.application.automation.tools.run.RunFromAlmBuilder"}
net.sf.json.JSONException: null object	at net.sf.json.JSONObject.verifyIsNull(JSONObject.java:2688)	at net.sf.json.JSONObject.getString(JSONObject.java:2035)	at hudson.plugins.logfilesizechecker.LogfilesizecheckerWrapper$DescriptorImpl.newInstance(LogfilesizecheckerWrapper.java:210)	at hudson.plugins.logfilesizechecker.LogfilesizecheckerWrapper$DescriptorImpl.newInstance(LogfilesizecheckerWrapper.java:141)	at hudson.model.Descriptor$1.instantiate(Descriptor.java:1046)	at org.kohsuke.stapler.RequestImpl.instantiate(RequestImpl.java:665)	at org.kohsuke.stapler.RequestImpl.access$100(RequestImpl.java:81)	at org.kohsuke.stapler.RequestImpl$TypePair.convertJSON(RequestImpl.java:587)	at org.kohsuke.stapler.RequestImpl.bindJSON(RequestImpl.java:400)	at org.kohsuke.stapler.RequestImpl.bindJSON(RequestImpl.java:396)	at hudson.model.Descriptor.newInstance(Descriptor.java:569)	at hudson.plugins.logfilesizechecker.LogfilesizecheckerWrapper$DescriptorImpl.newInstance(LogfilesizecheckerWrapper.java:217)	at hudson.plugins.logfilesizechecker.LogfilesizecheckerWrapper$DescriptorImpl.newInstance(LogfilesizecheckerWrapper.java:141)	at hudson.util.DescribableList.rebuild(DescribableList.java:173)	at hudson.maven.MavenModuleSet.submit(MavenModuleSet.java:1167)	at hudson.model.Job.doConfigSubmit(Job.java:1136)	at hudson.model.AbstractProject.doConfigSubmit(AbstractProject.java:787)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:601)	at org.kohsuke.stapler.Function$InstanceFunction.invoke(Function.java:297)	at org.kohsuke.stapler.Function.bindAndInvoke(Function.java:160)	at org.kohsuke.stapler.Function.bindAndInvokeAndServeResponse(Function.java:95)	at org.kohsuke.stapler.MetaClass$1.doDispatch(MetaClass.java:120)	at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:53)	at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:727)	at org.kohsuke.stapler.Stapler.invoke(Stapler.java:841)	at org.kohsuke.stapler.MetaClass$6.doDispatch(MetaClass.java:248)	at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:53)	at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:727)	at org.kohsuke.stapler.Stapler.invoke(Stapler.java:841)	at org.kohsuke.stapler.Stapler.invoke(Stapler.java:630)	at org.kohsuke.stapler.Stapler.service(Stapler.java:224)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)	at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:96)	at hudson.plugins.audit_trail.AuditTrailFilter.doFilter(AuditTrailFilter.java:66)	at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:99)	at hudson.plugins.greenballs.GreenBallFilter.doFilter(GreenBallFilter.java:58)	at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:99)	at net.bull.javamelody.MonitoringFilter.doFilter(MonitoringFilter.java:208)	at net.bull.javamelody.MonitoringFilter.doFilter(MonitoringFilter.java:181)	at net.bull.javamelody.PluginMonitoringFilter.doFilter(PluginMonitoringFilter.java:86)	at org.jvnet.hudson.plugins.monitoring.HudsonMonitoringFilter.doFilter(HudsonMonitoringFilter.java:84)	at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:99)	at hudson.util.PluginServletFilter.doFilter(PluginServletFilter.java:88)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)	at hudson.security.csrf.CrumbFilter.doFilter(CrumbFilter.java:48)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)	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 jenkins.security.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:117)	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:142)	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:174)	at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)	at jenkins.security.ApiTokenFilter.doFilter(ApiTokenFilter.java:64)	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:67)	at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)	at hudson.security.ChainedServletFilter.doFilter(ChainedServletFilter.java:76)	at hudson.security.HudsonFilter.doFilter(HudsonFilter.java:164)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)	at org.kohsuke.stapler.compression.CompressionFilter.doFilter(CompressionFilter.java:46)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)	at hudson.util.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:81)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:470)	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:291)	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:602)	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)	at java.lang.Thread.run(Thread.java:722)