I am getting the error Status: Error: Node "Bar Chart (JFreeChart)" not available (provided by "KNIME GmbH, Konstanz, Germany"; plugin "org.knime.ext.jfreechart" is not installed). It should be in there and I was wondering how I could download this node. All the other nodes in the same file are working.
this means, you did not install the jfree chart extension. Here is a description how to install further extensions into the KNIME Analytics Plattform. https://www.knime.org/downloads/update