SOCK_ERROR: bind error #48(address already in use), i already detached Rserve package, but it still shows this error

Question

i am trying to connect R with java i didn`t use Rstudio and i went through the process on Macbook Terminal here's what i did

R
library(Rserve)
Rserve(args="--no-save")

and after this, it shows

Rserv started in daemon mode.
SOCK_ERROR: bind error #48(address already in use)

i tried to deatch("packages:Rserve",TRUE) and use Search() on R, it shows me

search()
[1] ".GlobalEnv"        "package:stats"     "package:graphics" 
[4] "package:grDevices" "package:utils"     "package:datasets" 
[7] "package:methods"   "Autoloads"         "package:base"

one thing i know is that when i completely reboot my macbook, it doesn`t show me Sock_Error message, but i wanna resolve this without rebooting my laptop

thanks in advance!