ValueError: Mismatched dtypes found in `pd.read_csv`/`pd.read_table`.

+-----------------------------------+--------+----------+
| Column                            | Found  | Expected |
+-----------------------------------+--------+----------+
| mycol | object | float64  |
+-----------------------------------+--------+----------+

The following columns also raised exceptions on conversion:

- Search Results Count (p4) (prop4)
  ValueError("could not convert string to float: 'cliqz.com/tracking'")