Need help in programming Zigbee in ESP32C6

I want to use Zigbee protocol for developing a mesh network. I am able to create a single coordinator to end device link but I don't know how to send a single character byte to the end device and vice versa. I created custom cluster but the application goes into infinite loop rebooting constantly.

Need help with esp32c6 in esp-idf.

You can get some basic idea from here: