Timing advance for LTE networks

When I am sending the command AT+QNETINFO = 2,7 to log the Timing advance of the LTE network in a loop, it reboots the modem randomly. The output before it crashes looks like the following:-

at+qnetinfo=2,7

+QNETINFO: “LTE”, 3

“rsssnr”,0

“timingadvance”, 2

“drx”,1280,0,0

OK

RDY (This is not normal)

+CPIN: READY

+QUSIM: 1

+CFUN: 1

+QIND: SMS DONE

+QIND: PB DONE

How do I avoid the reboot?