@jeanfabre @felmue, thanks for your answer on that other post (https://community.m5stack.com/post/26512) it works ! thanks for pointing out that! it's really odd that at least we have no errors in the terminal that the file was not found... coudl save a lot of frustration, or maybe there is a debug mode somwhere in uiflow to get more details out of the current code execution