Turi Create - Please use dropna() to drop rows
问题 I am having issues with Apple Turi Create and image classifier. I have successfully created a model with 22 categories. I have recently added 5 more categories and console is giving me error warning Please use dropna() to drop rows with missing target values. The full console log looks like this: [16:30:30] src/nnvm/legacy_json_util.cc:190: Loading symbol saved by previous version v0.8.0. Attempting to upgrade... [16:30:30] src/nnvm/legacy_json_util.cc:198: Symbol successfully upgraded!