Musa Ceylan

ValueError: columns overlap but no suffix specified: Index([u' payment_type:CRD', u' payment_type:DIS', u' payment_type:NOC', u' payment_type:UNK'], dtype='object')

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Hi, I have been running your code on chapter 6 and I keep getting the error on the subject. Am I missing something ? on subchapter Features 3 code :...