MQTT loop function flagged as not existing

1

I have a project that uses ESP32_MQTTClient. When building it I ge this error:

src/main.cpp: In function 'void loop()':
src/main.cpp:203:16: error: 'class ESP32_MQTTClient' has no member named 'loop'
203 | mqttc.loop();
| ^~~~
*** [.pio/build/esp32dev/src/main.cpp.o] Error 1

I have tried rebuilding the IntelliSense Index and removing the library from the project and reinstalling. The problem persists. I’m at a loss about what to do next. Any suggestions about how to fix/troubleshoot. This is my .ini file

[env:esp32dev]

platform = espressif32

board = esp32dev

framework = arduino

monitor_speed = 115200

lib_ldf_mode = chain

lib_deps = 

    bodmer/TFT_eSPI @ ^2.5.43

    marekburiak/ESP32_MQTTClient@^1.0.0

build_flags = 

    -D USER_SETUP_LOADED=1

    -D ILI9341_2_DRIVER=1

    -D TFT_WIDTH=240

    -D TFT_HEIGHT=320

    -D TFT_MISO=12

    -D TFT_MOSI=13

    -D TFT_SCLK=14

    -D TFT_CS=15

    -D TFT_DC=2

    -D TFT_RST=-1

    -D TFT_BL=21

    -D TFT_BACKLIGHT_ON=HIGH

    -D LOAD_GLCD=1

    -D LOAD_FONT2=1

    -D LOAD_FONT4=1

    -D LOAD_FONT6=1

    -D LOAD_FONT7=1

    -D LOAD_FONT8=1

    -D SPI_FREQUENCY=55000000

    -D SPI_READ_FREQUENCY=20000000

    -D SPI_TOUCH_FREQUENCY=25000000

I am attempting to program a ESP32- 2432S028 (CYD)

Thanks for any advice

2

Are you 100% sure about this? There are tons of similiarly named libraries. This one definitely doesn’t have a .loop() member function, see source code.

However, a library named

bertmelis/espMqttClient@^1.7.3

does have that loop function.

Same for this library

plapointe6/EspMQTTClient@^1.13.3

What other functions do you call on that mqttc object? How do you construct that object? You could narrow it down from there, or just try the given libraries.