I was using ESP-IDF v3.3.

I have solved it by updating to ESP-IDF v4.0-beta1 and followed the normal procedure, now It is working fine.

thanks for the reply.

I install ESP-IDF as suggested in this document https://docs.espressif.com/projects/esp ... index.html.
But it is requiring an older GCC (5.2.0), while the toolchain Installed has GCC (8.2.0).

How can I make the ESP-IDF work with the GCC I have (8.2.0)?