Error has it.
IDF version 8b885fb
m5stack/esp32-cam-demo 0f8a432

It not work

cd esp-idf

git checkout 3b92e85

git submodule update --init --recursive

cd esp32-cam-demo-m5cam

make

esp32-cam-demo-m5cam/main/app_main.c:35:29: fatal error: esp_http_server.h: No such file or directory
compilation terminated.
make[1]: *** [app_main.o] Error 1
make: *** [component-main-build] Error 2