Help Needed: Encountering Error While Testing Bluetooth Project on Android Mobile

Hello everyone, I am facing a problem as I have completed my first project using Bluetooth and wanted to test it live on my Android mobile. However, I am encountering the following error:

and i beleve that there is no error in the code blocks , Please find the screenshot of my block diagram as well , Does anyone have an answer for that?

Hello @anas.h9q
Thank you for sharing screenshots.
Is this an issue on the downloaded app on your device or the Thunkable live app?
Could you please test it using the latest version of the Thunkable live app?