I got below error while I did upload.
I couldn’t fix. Can you please help?
Arduino: 1.8.9 (Windows 10), Board: "NodeMCU-32S, 80MHz, 921600" In file included from C:\Users\Hyun Suk O\Documents\Arduino\DHT22_Web_Server\DHT22_Web_Server.ino:8:0: Multiple libraries were found for "ESPAsyncWebServer.h" C:\Program Files (x86)\Arduino\libraries\ESPAsyncWebServer\src/ESPAsyncWebServer.h:33:22: fatal error: AsyncTCP.h: No such file or directory Used: C:\Program Files (x86)\Arduino\libraries\ESPAsyncWebServer compilation terminated. Not used: C:\Program Files (x86)\Arduino\libraries\AsyncTCP exit status 1 Error compiling for board NodeMCU-32S. This report would have more information with "Show verbose output during compilation" option enabled in File -> Preferences.
Delete the ESPAsyncWebServer library and the AsyncTCP library from your libraries folder.
It should solve your problem.
Hello Sara, thanks for your help.
But, in the serial monitor, it kept printing “Connection to WiFi..”.
I checked with other file. The internet was OK with other code. What did I do wrong?