I don't know if I done something wrong but on 1.4.11 my /c and /s commands is not working and it used to in the earlier version for minecraft 1.13

commandCameraMode has been removed. For a workaround, use F3+F4 or F3+N for a vanilla way, or download https://github.com/gnembon/scarpet/blob/master/programs/survival/cam.sc and add it to the scripts folder of whatever worlds you want to use it on.

You'd think the memo would've gotten round by now...

/c and /s were the workaround. F3-N and F3F4 is the Mojang solution.