Why is my Pantheon git clone not loading correctly?
The issue you're exhibiting is most likely a result of the database reflecting a temp directory (on the Pantheon server) that does not exist or is not writable on your local LAMP environment.

To reset the temp directory for your local development instance, you can:


use drush to set the temp directory (typically /tmp)
navigate to admin/config/media/file-system


If after setting the temp directory and clearing caches, you still exhibit similar behavior, you may want to double check the file owner/group permissions for the public files directory.

See https://www.drupal.org/node/244924 for a how to identify and set permissions, and refer to http://www.drupalden.co.uk/file-folder-permission-settings-drupal-7 which provides a good summary (note- permissions recommended for D7 also apply to D8)