Error reported in Mqtt file of Blinker downloaded from PlatformIO #4
Description
The program has an error in the MQTT section for the ESP32 development version, which seems to be a problem with the files during packaging. The solution is to download the official Arduino library, copy all the files from the MQTT folder under the modules folder in the src folder, and paste them into the MQTT folder under the Blinker downloaded by PlatformIO, and the error will be resolved