毕加索加载图片失败

i want to load images by picasso. i use this code

    Picasso.with(getContext())
    .load("https:/url.com")// here you resize your image to whatever width and height you like

    .into(imghotel, new Callback() {
        @Override
        public void onSuccess() {

        }

        @Override
        public void onError() {
            Toast.makeText(getContext(), "error", Toast.LENGTH_SHORT).show();
        }
    });

there is one big problem that i cant handle it. when i test another url all thing is ok. when i test this url by android 23 and 26 all thing is ok. but when i test this url by android 19 picasso dont show image and show gateway timeout error .

i think ther is some problem in my php server.

any person can guide me

this is htacces file in server too

<IfModule mod_headers.c>
  Header set X-XSS-Protection "1; mode=block"
</IfModule> 


RewriteEngine On
RewriteCond %{HTTPS} off
RewriteRule ^(.*)$ https://url.com/$1 [L,R=301]



# php -- BEGIN cPanel-generated handler, do not edit
# Set the “ea-php56” package as the default “PHP” programming language.
<IfModule mime_module>
  AddHandler application/x-httpd-ea-php56 .php .php5 .phtml
</IfModule>
# php -- END cPanel-generated handler, do not edit

# BEGIN cPanel-generated php ini directives, do not edit
# Manual editing of this file may result in unexpected behavior.
# To make changes to this file, use the cPanel MultiPHP INI Editor (Home >> Software >> MultiPHP INI Editor)
# For more information, read our documentation (https://go.cpanel.net/EA4ModifyINI)
<IfModule php5_module>
   php_flag asp_tags Off
   php_flag display_errors Off
   php_value max_execution_time 300
   php_value max_input_time 9000
   php_value max_input_vars 10000
   php_value memory_limit 256M
   php_value post_max_size 128M
   php_value session.gc_maxlifetime 1440
   php_value session.save_path "/var/cpanel/php/sessions/ea-php56"
   php_value upload_max_filesize 128M
   php_flag zlib.output_compression Off
</IfModule>
<IfModule lsapi_module>
   php_flag asp_tags Off
   php_flag display_errors Off
   php_value max_execution_time 300
   php_value max_input_time 9000
   php_value max_input_vars 10000
   php_value memory_limit 256M
   php_value post_max_size 128M
   php_value session.gc_maxlifetime 1440
   php_value session.save_path "/var/cpanel/php/sessions/ea-php56"
   php_value upload_max_filesize 128M
   php_flag zlib.output_compression Off
</IfModule>
# END cPanel-generated php ini directives, do not edit