[Arduino IDE demo source code for KC868-A16]--#11-KC868-A16_Ethernet_Web_server_code

[egorov_v]

do you have downloaded ZIP file and unzip source code to use?

Yes, that's right, but I downloaded the libraries from the Arduino library manager
When I tried to load the AdvancedWebServer example from the WebServer_WT32_ETH01 library onto the board, I got the same error