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.
Then, install these libraries again:
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?