Problem when I try to change the stage drawing color through block

Hi,
This is the link to my project - Thunkable
This app was working fine a few months back. now the app seems to crash whenever it encounters a block related to stage (change of drawing width, color or touch drawing). The sprite hide or show also does not seem to work. Kindly help. Is there any problem with the stage and sprite-related blocks? why do they crash?
Thanks