Rstudio server start fails on linux redhat 7.3

I am trying to install rstudio server on my Linux redhat 7.3 but . The server is installed but while starting the rserver process it gives error
Error reading /etc/rstudio/rserver.conf: unrecognised option 'admin-enabled'
/sbin/rstudio-server: line 37: return: can only `return' from a function or sourced script
Job for rstudio-server.service failed because the control process exited with error code. See "systemctl status rstudio-server.service" and "journalctl -xe" for details.

On running systemctl status rstudio-server.service it gives --
rstudio-server.service - RStudio Server
Loaded: loaded (/etc/systemd/system/rstudio-server.service; enabled; vendor preset: disabled)
Active: failed (Result: start-limit) since Wed 2019-06-26 07:48:38 EDT; 55s ago
Process: 15260 ExecStart=/usr/lib/rstudio-server/bin/rserver (code=exited, status=1/FAILURE)
Running journalctl -xe gives
No journal files were found.
-- No entries --

R is also installed
R version 3.4.2 (2017-09-28) -- "Short Summer"
Copyright (C) 2017 The R Foundation for Statistical Computing
Platform: x86_64-redhat-linux-gnu (64-bit)

I tried changing the rserver.conf file removing admin-enabled and admin-group options as suggested by some online posts but still the server activation fails.
It's been 2 days am searching for this but no luck.

Hi Ashutosh,

Simply delete the /etc/rstudio/rserver.conf file by using root access.
you're using the open-source version of RStudio Server, which doesn't allow for the use of the admin dashboard, please [read here]

Then simply rstudio start from the RHEL console and login to the rstudio via your local host on the web browser on port 8787.