rob lcd screen shield not working Moderators: adafruit_support_bill, adafruit

[Taronyu]

I had to re set everything up on my new computer and the Arduino ide is apparently too dumb to connect or accept new code. I'm using the same code but now intead of following orders it gives me this meaningless text:
"Users/hankgunderson1/Desktop/untitled folder 2/temp_humidity_buttons_1.3/temp_humidity_buttons_1.3.ino:9:29: fatal error: Adafruit_Si7021.h: No such file or directory
#include "Adafruit_Si7021.h"
^
compilation terminated.
exit status 1
Error compiling for board Generic ESP8266 Module.
"
how do I FORCE the new code on whether the ide likes it or not?
the current code on the Arduino is the same but with one different color for the backlight.