Install GpioExpanderServiceApp on board



I am using MangOH Red wp77xx. I want to use embedded button and led, and for that I use GpioExpanderService.

I followed topics that show how to use this app, and in a first time, it worked.

However, since today, I don’t know why but the GpioExpanderService app disappeared from the board.

When I try to reinstall it , the install command

app install gpioExpanderServiceRed.wp77xx.update

succeed but the connection to the Mangoh red is interrupted and the app doesn’t appear on the board.

Does someone have an idea to fix this problem?

Thank you in advance