為啥https會自動301跳轉到http？

有個站點，剛剛成功的安裝了 Let’s Encrypt 的免費證書，nginx已經配置了關于https的訪問。

現(xiàn)在可以通過 https 和 http 兩種方式訪問了，有些頁面兩種方式都可以訪問，但是部分頁面通過https訪問竟然會 301 跳轉到 http 頁面地址，例如：

https://www.phpernote.com/php-template/200.html

這是為什么呢？請各位大神各抒己見，多謝！

nginx 配置如下：

server {
        listen       80;
        server_name  www.phpernote.com ;
        root   /home/xxx/xxx;
        location / {
            index  index.php index.html;
        }
        include /home/xxx/xxx/.htaccess;
        location ~ ^(?:(?<!\.php).)+\.php($|/.*) {
            fastcgi_pass unix:/tmp/php-cgi.sock;
            fastcgi_index  index.php;
            fastcgi_split_path_info ^(.+\.php)(/.+)$;
            fastcgi_param  SCRIPT_FILENAME  $document_root$fastcgi_script_name;
            fastcgi_param  PATH_INFO  $fastcgi_path_info;
            fastcgi_param  PATH_TRANSLATED  $document_root$fastcgi_path_info;
            include        fastcgi_params;
        }
}

server {
        listen       80;
        server_name  phpernote.com ;
        root   /home/xxx/xxx;
        location / {
            index  index.php index.html;
        }
        include /home/xxx/xxx/.htaccess;
        location ~ ^(?:(?<!\.php).)+\.php($|/.*) {
            fastcgi_pass unix:/tmp/php-cgi.sock;
            fastcgi_index  index.php;
            fastcgi_split_path_info ^(.+\.php)(/.+)$;
            fastcgi_param  SCRIPT_FILENAME  $document_root$fastcgi_script_name;
            fastcgi_param  PATH_INFO  $fastcgi_path_info;
            fastcgi_param  PATH_TRANSLATED  $document_root$fastcgi_path_info;
            include        fastcgi_params;
        }
}

server {
        listen       443 ssl;
        ssl on;
        ssl_certificate /etc/letsencrypt/live/www.phpernote.com/fullchain.pem;
        ssl_certificate_key /etc/letsencrypt/live/www.phpernote.com/privkey.pem;
        server_name  www.phpernote.com ;
        root   /home/xxx/xxx;
        location / {
            index  index.php index.html;
        }
        include /home/xxx/xxx/.htaccess;
        location ~ ^(?:(?<!\.php).)+\.php($|/.*) {
            fastcgi_pass unix:/tmp/php-cgi.sock;
            fastcgi_index  index.php;
            fastcgi_split_path_info ^(.+\.php)(/.+)$;
            fastcgi_param  SCRIPT_FILENAME  $document_root$fastcgi_script_name;
            fastcgi_param  PATH_INFO  $fastcgi_path_info;
            fastcgi_param  PATH_TRANSLATED  $document_root$fastcgi_path_info;
            include        fastcgi_params;
        }
}