During preprocessing, pandas raises following warning:
A value is trying to be set on a copy of a slice from a DataFrame
Locate which function is causing the trouble and rewrite it so the warning does not fire.
This is probably happening in multiple places!
(one was found, see the image)

During preprocessing, pandas raises following warning:
Locate which function is causing the trouble and rewrite it so the warning does not fire.
This is probably happening in multiple places!
(one was found, see the image)