When I tried to start Magento, I got an error message. Due to the error, I cannot open the admin page even.
Can you share exact error you are getting ? if this the only error " Service Temporarily Unavailable", is there any number of error ?
Most probably it's server error, check with your hosting once.
Hope it helps !
Thanks for your reply.
I am getting the following error
Service Temporarily Unavailable
The server is temporarily unable to service your request due to maintenance downtime or capacity problems. Please try again later.
can you share after which process you got this ?
restart your server, still no luck then exit code in index.php if getting there then it's magento issue.
hope you get it.