Mate Tweak does not launch

Support & Help Requests
1

Mate-Tweak does not launch with some icon themes . But when I revert to Ambiant-MATE it works again . Here is the output of terminal :
" :~$ mate-tweak
Traceback (most recent call last):
File “/usr/bin/mate-tweak”, line 649, in
MateTweak()
File “/usr/bin/mate-tweak”, line 501, in init
img = theme.load_icon(sidePage.icon, 36, 0)
GLib.Error: gtk-icon-theme-error-quark: Иконата «preferences-system-windows» не присъства в темата (0)
"

2

This is an error is caused by the icon-theme you are using. The icon for “preferences-system-windows” does not exist.