Error 515 Bluetooth connection

hi everyone i need help.
i have this error massage when my app initialize.
''Error 515: Not connected to a Bluetooth device'' how do rid of that.

Are you sure you are using the right BLUEOOTH extension
if you aren't go :point_right:

These blocks inside a Timer event do not really make sense, see also

PS: as this thread is already 1 year old, I will close it