500 ошибка после подключения SSL сертификата в nginx, как лечить?

server {
        listen 80;
        server_name localhost;
        root /usr/share/nginx/html;
        index index.php index.html index.htm;

        # Redirect server error pages to the static page #
        location / {
                        try_files $uri $uri/ /index.php;
        }
                        error_page 500 502 503 504 /50x.html;
        location = /50x.html {
                        root /usr/share/nginx/html;
        }

        # Pass the PHP scripts to FastCGI server #
        location ~ \.php$ {
                        try_files $uri =404;
                        fastcgi_pass 127.0.0.1:9000;
                        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
                        fastcgi_index index.php;
                        include fastcgi_params;
       }
}

# My Site (Laravel)

        # Редиректим с www
        server {
                server_name www.example.com;
                return 301 $scheme://example.com$request_uri;
        }

        server {
                listen 443;
                ssl on;
                ssl_certificate /home/cert.pem;
                ssl_certificate_key /home/cert_key.pem;

                server_name .example.com;
                root /usr/share/nginx/html/laravel/public;

                index index.php;

                charset utf-8;

                location / {
                try_files $uri $uri/ /index.php$is_args$args;
        }

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

        # Added cache headers for images.
        location ~* \.(png|jpg|jpeg|gif)$ {
            expires 30d;
            log_not_found off;
        }

        location ~ \.php$ {
                fastcgi_split_path_info ^(.+\.php)(/.+)$;
                fastcgi_pass 127.0.0.1:9000;
                fastcgi_index index.php;
                include fastcgi_params;
                fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
                fastcgi_intercept_errors off;
                fastcgi_buffer_size 16k;
                fastcgi_buffers 4 16k;
        }

    gzip on;
    gzip_disable "msie6";
    gzip_comp_level 9;
    gzip_types text/plain text/html text/css application/json application/x-javascript text/xml application/xml application/xml+rss text/javascript application/javascript;

    location ~* ^.+\.(rss|atom|jpg|jpeg|gif|png|ico|rtf|js|css|ttf)$ {
        expires max;
    }

    location ~ /\.ht {
        deny all;
    }
}