To resolve issues with the Acquia Search module:
localhost or to the IP address 127.0.0.1, the Acquia Search module is not configured as expected or cannot detect the appropriate search index based on environment variables.Check that the Drupal site can properly reach the Acquia Search API service, which provides the list of available Solr indexes for your application to your Drupal site. To check the site connection with the Acquia Search API Service, complete the following steps:
If properly connected, the system displays a list of available search indexes in the SOLR INDEXES CURRENTLY AVAILABLE FOR YOUR APPLICATION box.
$settings['acquia_search']['override_search_core'] to point the module to a search index. For more information, see README.txt.Acquia recommends using the Solr Devel module to debug Solr indexing and queries. For troubleshooting, see Using Solr Devel module to debug Solr indexing and queries