ESP32 DHT11/DHT22 Web Server – Temperature and Humidity using Arduino IDE

Q&A Forum › Category: ESP32 › ESP32 DHT11/DHT22 Web Server – Temperature and Humidity using Arduino IDE

oh_hyunseok asked 6 years ago

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.

3 Answers

0 Vote Up Vote Down

Sara Santos Staff answered 6 years ago

Hi.

Delete the ESPAsyncWebServer library and the AsyncTCP library from your libraries folder.

Then, install these libraries again:
https://github.com/me-no-dev/ESPAsyncWebServer
https://github.com/me-no-dev/AsyncTCP

It should solve your problem.

Regards,
Sara

0 Vote Up Vote Down

oh_hyunseok answered 6 years ago

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?

Thank you,

Alex

0 Vote Up Vote Down

Sara Santos Staff answered 6 years ago

Hi.
I don’t know why that happens. Did you insert your network credentials? Sometimes we forget to insert them and we get that message.
Now, you don’t get the other errors, right?