Logo is not displaying This is the code I used in Drupal 7.

            &lt;a href="&lt;?php print $base_path ?&gt;" title="&lt;?php print t('Home') ?&gt;"&gt;
                &lt;img src="&lt;?php print $logo ?&gt;" alt="&lt;?php print t('Home') ?&gt;" /&gt;
            &lt;/a&gt;


This is the code I am using for Drupal 8.

           &lt;a href="{{ base_path }}" title="{{ 'Home'|t }}"&gt;      
    &lt;span&gt;{{ logopath }}&lt;/span&gt;
                &lt;img src="{{logo}}" alt="{{ 'Home'|t }}" alt="T.M. Patel International School"/&gt;
            &lt;/a&gt;


If I upload the logo, it doesn't display. What should I do now?
This Link might be helpful :  http://www.lohmeyer.rocks/blog/2015/01/14/00187-print-your-themes-logo-path-drupal-8-twig.

I think you should define the logo path variable first into template.tpl in MyTheme_preprocess_page function.

One More thing you are trying to use {{logopath}} in 'span' tag and into 'src' its {{logo}}.