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    Expert tip

    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.

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via by Unknown author, 2 years ago
via Jenkins JIRA by sasconsul, 1 year ago
via Jenkins JIRA by sasconsul, 1 year ago
via Jenkins JIRA by Sean DeNigris, 1 year ago
net.sf.json.JSONException: null object	at net.sf.json.JSONObject.verifyIsNull(	at net.sf.json.JSONObject.getString(	at org.jenkinsci.plugins.github.webhook.subscriber.PingGHEventSubscriber.onEvent(	at org.jenkinsci.plugins.github.extension.GHEventsSubscriber$4.applyNullSafe(	at org.jenkinsci.plugins.github.extension.GHEventsSubscriber$4.applyNullSafe(	at org.jenkinsci.plugins.github.util.misc.NullSafeFunction.apply(	at$	at	at	at org.jenkinsci.plugins.github.util.FluentIterableWrapper.toList(	at com.cloudbees.jenkins.GitHubWebHook.doIndex(