Sometime, disconnect between Esp32 and gateway and server ChirpStack

[SARATWADEE]

Hi everyone,

Problem:
I have problem about ESP32+Lora SX1276 connect with gateway and connect with server ChirpStack by writing firmware send uplink every 1 min. After that, ESP32 +Lora SX1276 not sending uplink then i add watchdog firmware for reset. The result sending uplink again.

Question:
I need to know why ESP32+Lora SX1276 stop sending uplink?
This action, i cannot prove, please help me to solve.