Ask for help about HT M00L

I update the firmware of HT M00L with the package M00_2021_05_26_V1_9.bin, and the output information like that:
M ERR:: readConfig, file=/esplicense2.txt does not exist
inside license error, check user license
Please provide a correct license! For more information:
http://www.heltec.cn/search/
ESP32ChipID=F07700E6E2E0
Please help me, thanks.

ask foe help…l.

You can reference this document.https://heltec-automation-docs.readthedocs.io/en/latest/gateway/ht-m00/update_firmware.html#the-processing-method-of-overwriting-the-ht-m00-firmware