Wifi shield not present when I connect my circuit to it

Hi, I am currently doing a school project with the use of Wifi Shield. The wifi shield is connected to our circuit designed on a breadboard. However, the serial module shows Wifi is connected when we did not connect the circuit and shows “Wifi shield is not present” when we attached the circuit. the circuit consists of three pressure sensors.

arduino_post.ino.ino (2.66 KB)

We need to know how you have the pressure sensors connected to the Arduino.