The sub domain abc.domain.com is not working showing the >> server not found error

The sub domain abc.domain.com is not working showing the >> server not found error . 

Check if the sub domain is created by going to cPanel >> Subdomains, If the sub domain is created and it is pointed to the correct root document folder and try with following step to resolve the issue 

You will have to enable the rewritebase rule in the Apache. Since there is no RewriteBase enabled for the sub domain 

You can also add the following code in the .htacess directly. 

<IfModule mod_rewrite.c>

RewriteEngine On

# RewriteBase /folder_path/

RewriteBase /