TreeCat

I am not good at English. I'm sorry. I'm using TinkerBoard2S. The OS uses Android 11. I use the mraa library to read the Uart value. But sometimes this error appears. JNI DETECTED ERROR IN APPLICATION: input is not valid Modified UTF-8: illegal continuation byte 0xf0(The value after byte changes every time) Even if I try to modify the mraa library, I cannot modify it because it is read-only. Can't I handle the value that is not converted to utf8 from TinkerBoard2S?