I keep receiving these kinds of errors when trying to execute the 07_Sentiment_Analysis_with_Deep_Learning and 08_Sentiment_Analysis_with_Deep_Learning_KNIME_nodes example workflows. Anyone have an idea what they mean?
This looks like a problem with your KNIME installation. Could you please try to reinstall the KNIME Keras integration (and – before – the KNIME Python integration, if installed)? You can uninstall an extension by selecting it under Help > About KNIME Analytics Platform >Installation Details > Installed Software and clicking Uninstall….
Additionally, could you upload your knime.log file here? (See here to learn how to locate the knime.log file.)