Using my android telephone when testing my application gives me an error

how can i use my android telephon when test my application app gives me an error .the screen show me security problem .i didnt understand its source could you help me

Hi @a_b, welcome to the community!
We can’t help you without providing us a screenshot of the error, and your blocks image :wink:

That is an error in companion connection.Try with exported apk.
Also show your blocks