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    Expert tip

    Look if your classpath is correct, and check if the versions of your libraries match the version you described in your pom.xml

Solutions on the web

via Google Groups by Andrew Langhorn, 1 year ago
jenkins/tasks/SimpleBuildStep
via Oracle Community by 701639, 2 years ago
com/thortech/xl/schedule/tasks/AttributeTransformer
via GitHub by gedefran
, 2 years ago
com/entagen/jenkins/JenkinsApi
via Stack Overflow by kandan
, 2 years ago
jenkins/security/MasterToSlaveCallable
via Google Groups by iqbal md, 3 months ago
java.lang.NoClassDefFoundError: jenkins/tasks/SimpleBuildStep	at java.lang.ClassLoader.defineClass1(Native Method)	at java.lang.ClassLoader.defineClass(ClassLoader.java:800)