ERROR LoadWorkflowRunnable Workflow could not be loaded. null

I am frequently running into issues with workflows not opening receiving the error:
ERROR LoadWorkflowRunnable Workflow could not be loaded. null

There appears to be no issues with the said workflows when closing and opening during the ‘session’ - the issue looks to appear only after closing Knime and restarting.

An example of the workflow has been loaded here: https://kni.me/w/CSysrT8-x5y-XcXN

thank you,

Michael.

Log details:
2019-12-20 08:31:11,730 : ERROR : ModalContext : : LoadWorkflowRunnable : : : Workflow could not be loaded. null
java.lang.NullPointerException
at org.knime.core.node.workflow.VariableType$VariableValue.equals(VariableType.java:110)
at org.knime.core.node.workflow.FlowVariable.equals(FlowVariable.java:444)
at java.util.AbstractList.equals(AbstractList.java:523)
at java.util.Vector.equals(Vector.java:988)
at org.knime.core.node.workflow.FlowObjectStack.equals(FlowObjectStack.java:602)
at org.knime.core.node.workflow.WorkflowManager.configureSingleNodeContainer(WorkflowManager.java:6006)
at org.knime.core.node.workflow.WorkflowManager.postLoad(WorkflowManager.java:8072)
at org.knime.core.node.workflow.WorkflowManager.loadContent(WorkflowManager.java:7910)
at org.knime.core.node.workflow.WorkflowManager.postLoad(WorkflowManager.java:8035)
at org.knime.core.node.workflow.WorkflowManager.loadContent(WorkflowManager.java:7910)
at org.knime.core.node.workflow.WorkflowManager.postLoad(WorkflowManager.java:8035)
at org.knime.core.node.workflow.WorkflowManager.loadContent(WorkflowManager.java:7910)
at org.knime.core.node.workflow.WorkflowManager.postLoad(WorkflowManager.java:8035)
at org.knime.core.node.workflow.WorkflowManager.loadContent(WorkflowManager.java:7910)
at org.knime.core.node.workflow.WorkflowManager.load(WorkflowManager.java:7864)
at org.knime.core.node.workflow.WorkflowManager.load(WorkflowManager.java:7785)
at org.knime.core.node.workflow.WorkflowManager.load(WorkflowManager.java:7758)
at org.knime.core.node.workflow.WorkflowManager.loadProject(WorkflowManager.java:7603)
at org.knime.workbench.editor2.LoadWorkflowRunnable.run(LoadWorkflowRunnable.java:179)
at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:119)

Given the stack trace, this appears to be a duplicate of Problem after upgrade to v4.1

2 Likes

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