Community Help With My Project Please

Hi,
I’m trying to add a widget and keep getting this error. I’ve read and re-read the suggestions and nothing.
Compilation error: CayenneMQTTClient.h: No such file or directory
I’ve uploaded both libraries Cayenne-MQTT-ESP and CayenneMQTT. I am using Arduino IDE 2.0.4.
Also, I have no idea what to change this information to:
// Send device info. Here we just send some example values for the system info. These should be changed to use actual system data, or removed if not needed.
CayenneMQTTPublishData(&mqttClient, NULL, SYS_VERSION_TOPIC, CAYENNE_NO_CHANNEL, NULL, NULL, CAYENNE_VERSION);
CayenneMQTTPublishData(&mqttClient, NULL, SYS_MODEL_TOPIC, CAYENNE_NO_CHANNEL, NULL, NULL, “Linux”);

Any help is greatly appreciated!

Easier to help if you post your arduino code