Install Openclipart extension for Libreoffice in Ubuntu

If you try to install the Openclipart extension for Libreoffice in Ubuntu 16.04, you might get this error:

Failed to register package for vnd.sun.star.expand:$UNO_USER_PACKAGES_CACHE/uno_packages/lu8331jgzjaf.tmp_/openclipart.oxt/python

To fix it, install libreoffice-script-provider-python like this:

$ sudo apt-get install libreoffice-script-provider-python

Now you should be able to install the Openclipart extension for Libreoffice: https://extensions.libreoffice.org/extensions/openclipart-org-integration

Inside Write, go to Insert > Media > OpenClipart.org and do a search for the clipart you need,. Here is an example of what's available: https://openclipart.org/search/?query=world+map