Program issue when using a crossfader

I am using a crossfader, for a Kontrol Z1,

then the Crossfader does not work, but I get the following log issue.

any idea?

self.pick_brain(self.new_crossfader_mapping_id_18)

File “C:\ProgramData\Ableton\Live 11 Suite\Resources\MIDI Remote Scripts\css_kontrol_z1_mk2\css_kontrol_z1_mk2.py”, line 1115, in pick_brain

self.val_brain(cnfg)

File “C:\ProgramData\Ableton\Live 11 Suite\Resources\MIDI Remote Scripts\css_kontrol_z1_mk2\css_kontrol_z1_mk2.py”, line 1211, in val_brain

new_val = self.absolute_decision(cnfg)

File “C:\ProgramData\Ableton\Live 11 Suite\Resources\MIDI Remote Scripts\css_kontrol_z1_mk2\css_kontrol_z1_mk2.py”, line 1383, in absolute_decision

if cnfg[“reverse_mode”] is False:

KeyError

:

‘reverse_mode’

school On