makerhawk ESP8266 with 0.91" oled display

I am having trouble compiling a sketch for a project that uses an ESP8266 board, I am getting this error code:Arduino:

Arduino: 1.8.12 (Windows Store 1.8.33.0) (Windows 10), Board: "Generic ESP8266 Module, 80 MHz, Flash, Legacy (new can return nullptr), All SSL ciphers (most compatible), dtr (aka nodemcu), 26 MHz, 40MHz, DOUT (compatible), 1MB (FS:64KB OTA:~470KB), 2, nonos-sdk 2.2.1+100 (190703), v2 Lower Memory, Disabled, None, Only Sketch, 115200"

In file included from C:\Users\maxpe\Desktop\school work - COVID19\DT\Engineering\Maxwell_Pelling_-gumball_dispenser_project-code001\Maxwell_Pelling-gumball_dispenser_project-_code001.ino:1:0:

C:\Users\maxpe\Documents\Arduino\libraries\AsyncTCP-master\src/AsyncTCP.h:26:23: fatal error: sdkconfig.h: No such file or directory

#include "sdkconfig.h"

^

compilation terminated.

exit status 1
Error compiling for board Generic ESP8266 Module.

This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.

please could someone help problem solve

I have attached the code and here is a link to the manufacturer's documentation and the second link is to the product page on amazon.

ADrive | Online Storage, Online Backup, Cloud Storage https://drive.google.com/open?id=0B8DSGdAr8_31d19WQmN6SE1fLVE, GitHub - Heltec-Aaron-Lee/WiFi_Kit_series: Arduino source codes and toolchain for WiFi_Kit_series made by HelTecAutomation.

Maxwell_Pelling_-gumball_dispenser_project-_code001.ino|attachment (2.34 KB)