Could not create directory WordPress plugin
A quick solution would be to change the permissions of the following:
sudo chmod 775 wp-content
sudo chown -R www-data:www-data wp-content/
Permission for themes and plugin folder
sudo chmod 757 wp-content/themes
sudo chmod 757 wp-content/plugins
if take care permission on production, you can run
sudo chown -R www-data:www-data wp-content/themes
sudo chown -R www-data:www-data wp-content/plugins
Cloudstar Mohan 