java.lang.NullPointerException: null

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java.lang.NullPointerException: null
at eu.cloudopting.bpmn.tasks.publish.update.UpdateToscaFile.execute(
at org.activiti.engine.impl.delegate.JavaDelegateInvocation.invoke(
at org.activiti.engine.impl.delegate.DelegateInvocation.proceed(
at org.activiti.engine.impl.delegate.DefaultDelegateInterceptor.handleInvocation(
at org.activiti.engine.impl.bpmn.behavior.ServiceTaskDelegateExpressionActivityBehavior.execute(
at org.activiti.engine.impl.pvm.runtime.AtomicOperationActivityExecute.execute(

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