KSLEEP giving error code:3

I am using an HL7800 and when I try to connect to LTE, I am getting this error out. I am very new to this so any help understanding these errors would be helpful?
Screenshot 2024-06-10 122429

Hw about at+ksleep=2 ?

I am not sure how to do that (sorry, im a beginner), these logs are coming from the modem itself. So i do not know how to send a command to the modem.

probably you need to figure out how to change the code