missing esp.modem.h error

[StevenNdunguAccount]

C:\Users\dev steve\Documents\Arduino\JOSEPHGSM\JOSEPHGSM.ino:27:10: fatal error: esp_modem.h: No such file or directory
27 | #include "esp_modem.h"
| ^~~~~~~~~~~~~
compilation terminated.
exit status 1

Compilation error: esp_modem.h: No such file or directory

I have been having this error since i bought a new pc and installing Arduino afresh could it be I'm missing something. Despite adding the Esp modem zip file, the error still persists.