I add the following codes in httpd-vhost.conf file.
DocumentRoot \"C:/xampp/htdocs/mmcast\"
ServerName mmcast.dev
 
          
Very first confirn you have an entry in hosts file -
127.0.0.1   mmcast.dev
Second, check httpd.conf file - there are multiple < directory tag and if necessary make all Require all granted
Third, in httpd-vhost.conf file write bellow lines
# you can put any port whatever you feel comfortable! I normally use 127.0.0.1:144 and counting for every project
Listen 127.0.0.1:81 
    ServerName mmcast.dev
    DocumentRoot "C:\xampp\htdocs\mmcast"
    SetEnv APPLICATION_ENV "development"
    
         DirectoryIndex index.php
         AllowOverride All
         Order allow,deny
         Allow from all
     
   
Fourthly, RESTART XAMPP Server. and try in browser https://127.0.0.1:81