Solved the problem.

make is ok
but download the bin to esp32 to run... is error :


W (3562) MQTT_CLIENT: Registering event loop while event callback is not null, clearing ca
llback
assertion "event_loop" failed : file "C:/msys32/home/Administrator/esp/esp-idf/components/e
sp_event/esp_event.c", line 647, function ...

Tkanks .
Yep, I cant find the file in that path, But can find in github. .
have a few bugs..
let me see.

hello, i learn the mqtt but find the error in "make flash monitor":

C:/msys32/home/Administrator/esp/esp-idf-release-v3.3/esp-idf-release-v3.3/examples/protocols/mqtt/ssl/main/app_main.c:21:25: fatal error: mqtt_client.h: No such file or directory
compilation terminated.
make[1]: *** [/home ...