Installation 

Install the extension via Composer:

composer require maikschneider/solr-shield

Then add the site set Solr Shield (maikschneider/solr-shield) to your site in Site Management > Sites, or declare it as a dependency of your site package's set:

dependencies:
  - maikschneider/solr-shield

Flush all caches afterwards, since cached pages still contain the old tx_solr links and form fields.