Fix some errors.

Author: cottrell

yfinance/base.py

@@ -868,6 +868,7 @@ def _fix_unit_random_mixups(self, df, interval, tz_exchange, prepost):
         if f_zeroes.any():
             df2_zeroes = df2[f_zeroes]
             df2 = df2[~f_zeroes]
+            df = df[~f_zeroes]  # all row slicing must be applied to both df and df2
         else:
             df2_zeroes = None
         if df2.shape[0] <= 1:
@@ -974,7 +975,7 @@ def _fix_unit_random_mixups(self, df, interval, tz_exchange, prepost):
             if "Repaired?" not in df2_zeroes.columns:
                 df2_zeroes["Repaired?"] = False
             df2 = pd.concat([df2, df2_zeroes]).sort_index()
-            df2.index = pd.to_datetime()
+            df2.index = pd.to_datetime(df2.index)
 
         return df2