Jango is a current Drupal 8 version is 8.5. Please make sure that you are using the latest PHP version on your server, for this newest version, Drupal requires at least PHP 7.1.
If you can’t use this version on your server then you need to delete vendor folder and run “composer update” command to get an older version of the plugins.
Jango v1.6.1 – Free Download Highly Flexible Component-Based Drupal 7 & 8 Theme from given below links
If you like this theme then you may also refer to more themes here:
For more additional topics you can also visit here: