Get error of "warning: deprecated conversion from string constant to 'char*' [-Wwrite-s] " to sendATcommands("AT+CMGF=1", "OK", 1000)

[gkbtaru]

I get the above error of deprecated conversion error to all sendAT commands. What needs to be doen to solve these errors.
I am a newbie and request help.

[Banzai00]

change sendATcommands("String Command(//not char command) ", "OK", 1000) #1