**if you are using nginx server you need to follow below steps**
Add This Entray on below files

> sudo nano /etc/nginx/fastcgi_params

     # Magento Variables
     fastcgi_param  MAGE_RUN_TYPE      $MAGE_RUN_TYPE;
     fastcgi_param  MAGE_RUN_CODE      $MAGE_RUN_CODE;
     fastcgi_param  MAGE_MODE          $MAGE_MODE;

> HostEntray

=====


    server {
      listen 80;
      listen 443 ssl;
      include snippets/ssl-cert.conf;
      server_name local.magento245.com;
      client_max_body_size 32M;
      set $MAGE_ROOT /var/www/html/magento2/magento245;
      set $MAGE_RUN_TYPE website;
      set $MAGE_RUN_CODE fr;
      set $MAGE_MODE developer;
      #set $MAGE_MODE default;
      #set $MAGE_MODE production;
      fastcgi_read_timeout 3000;
    }