Use this script in Homestead to prevent "upstream sent too big header while reading response header from upstream" nginx error

serve-symfony2.sh

#!/usr/bin/env bash

declare -A params=$6     # Create an associative array
paramsTXT=""
if [ -n "$6" ]; then
    for element in "${!params[@]}"
    do
        paramsTXT="${paramsTXT}
        fastcgi_param ${element} ${params[$element]};"
    done
fi

block="server {
    listen ${3:-80};
    listen ${4:-443} ssl http2;
    server_name $1;
    root \"$2\";

    index index.html index.htm index.php app_dev.php;

    charset utf-8;

    location / {
        try_files \$uri \$uri/ /app_dev.php?\$query_string;
    }

    location = /favicon.ico { access_log off; log_not_found off; }
    location = /robots.txt  { access_log off; log_not_found off; }

    access_log off;
    error_log  /var/log/nginx/$1-ssl-error.log error;

    sendfile off;

    client_max_body_size 100m;

    # DEV
    location ~ ^/(app_dev|app_test|config)\.php(/|\$) {
        fastcgi_split_path_info ^(.+\.php)(/.+)\$;
        fastcgi_pass unix:/var/run/php/php$5-fpm.sock;
        include fastcgi_params;
        fastcgi_param SCRIPT_FILENAME \$document_root\$fastcgi_script_name;
        $paramsTXT

        fastcgi_intercept_errors off;
        fastcgi_buffers 128 4096k;
        fastcgi_buffer_size 4096k;
    }

    # PROD
    location ~ ^/app\.php(/|$) {
        fastcgi_split_path_info ^(.+\.php)(/.+)$;
        fastcgi_pass unix:/var/run/php/php$5-fpm.sock;
        include fastcgi_params;
        fastcgi_param SCRIPT_FILENAME \$document_root\$fastcgi_script_name;
        $paramsTXT

        fastcgi_intercept_errors off;
        fastcgi_buffers 128 4096k;
        fastcgi_buffer_size 4096k;
        internal;
    }

    location ~ /\.ht {
        deny all;
    }

    ssl_certificate     /etc/nginx/ssl/$1.crt;
    ssl_certificate_key /etc/nginx/ssl/$1.key;
}
"

echo "$block" > "/etc/nginx/sites-available/$1"
ln -fs "/etc/nginx/sites-available/$1" "/etc/nginx/sites-enabled/$1"