Hi, just to start off let me just say that I'm new to electronics, so I apologize if I'm making any obvious mistakes here. I have looked through the tutorial about including external libraries a few times, and incorporated what I read there into a sketch using Arduino and Adafruit's thermal printer (https://www.adafruit.com/product/2752). When I upload the original Uduino base sketch onto the board, the Uduino manager recognizes my board immediately. However, when I upload the code incorporating the printer library and the Uduino library, I get the error attached.
I am unsure as to why this is happening. I am going to send a screenshot of the code I'm using that has Adafruit's printer library and the Uduino one. Is there something I am missing?
It says in the external library tutorial that any library can work. I have a feeling that is the case and I'm just missing something. Please help!
(Also, I'm using the Arduino Uno and Mac High Sierra.)