Diagnosing unknown LoRa-E5-HF module issue

Hi SYAMALA,

If you prefer ArduinoIDE, which is easier to write than stm32cubeide, the following link may be helpful.
Programming LoRa-E5 with Arduino, LoRa-E5 mini Point to Point Comminucation over 24 km - #8 by msfujino