解决方法 可以参考这篇文章：

But first, you will need to download the esp32cam.h library. For this go to Github and download the esp32cam Zip.

GitHub - yoursunny/esp32cam: OV2640 camera on ESP32-CAM, Arduino library

具体就是下面的这篇重要的文章 ：

ESP32 CAM with Python OpenCV Yolo V3 for object detection and Identification

ps 大家可以下载下面的文件源码后端的

https://download.csdn.net/download/qqqweiweiqq/88826587?spm=1001.2014.3001.5503

微信聊天框html

https://download.csdn.net/download/qqqweiweiqq/88826548?spm=1003.2166.3001.6637.2

优惠卷系统Go语言实现:

https://download.csdn.net/download/qqqweiweiqq/88826520?spm=1003.2166.3001.6637.3

秒杀系统go后端开发源代码:

https://download.csdn.net/download/qqqweiweiqq/88826273?spm=1003.2166.3001.6637.4