Http prefix to remote server name

IoT Modules HL78
1

Hi,
I’m working with HL7812 FW v 5.5.14.0 and using freeRTOS Cellular library.
I have situation where passing one address pattern - connection success and other - fails :

One which fails :

AT+KTCPCFG=1,0,\"http://postman-echo.com\",80", '\0'

And I’m receiving URC NOTIF : DNS error after calling

AT+KTCPCNX

One which succeed :

AT+KTCPCFG=1,0,\"postman-echo.com\",80", '\0'

There is a problem with passing http or the “//” of http , to KTCPCFG ?
What will be correct steps to handle such error from cellular module’s point of view ?

2

That parameter should only contain ip address, so http string should not be included