ARDUINO M10 GSM r3 SHIELD and Thingspeak

I want to send temperature data using my Arduino GSM r3 shield. I am using Arduino Mega 2560 and i have configured it to be used by the shield as shown in the official Arduino website. However the results of the serial monitor confuse me as i am getting some error. I need some advice on what might be wrong that i am getting this error. I have provided my code and the serial monitor view.

arduino_forum_code.txt (2.22 KB)