fix

Author: JamesLinxun

freqtrade/freqai/data_kitchen.py

@@ -709,9 +709,11 @@ def merge_features(
         skip_columns = [
             (f"{s}_{suffix}") for s in ["date", "open", "high", "low", "close", "volume"]
         ]
+
         for s in ORDERFLOW_ADDED_COLUMNS:
             if s in dataframe.columns and f"{s}_{suffix}" in dataframe.columns:
                 skip_columns.append(f"{s}_{suffix}")
+
         dataframe = dataframe.drop(columns=skip_columns)
         return dataframe