Getting 400 error

I'm having problems getting SOLR to work on my new Omeka install. Omeka says that it can properly connect to the SOLR server but I keep getting an error message when I try to search.

Here is my error log:

2016-12-05T13:28:22-08:00 ERR (3): Apache_Solr_HttpTransportException: '400' Status: Bad Request in /var/www/html/omeka/plugins/SolrSearch/lib/solr-php-client/Service.php:338 Stack trace: #0 /var/www/html/omeka/plugins/SolrSearch/lib/solr-php-client/Service.php(1176): Apache_Solr_Service->_sendRawGet('http://localhos...') #1 /var/www/html/omeka/plugins/SolrSearch/controllers/ResultsController.php(100): Apache_Solr_Service->search('deliberations', 0, '10', Array) #2 /var/www/html/omeka/plugins/SolrSearch/controllers/ResultsController.php(65): SolrSearch_ResultsController->_search(0, '10', false) #3 /var/www/html/omeka/application/libraries/Zend/Controller/Action.php(516): SolrSearch_ResultsController->indexAction() #4 /var/www/html/omeka/application/libraries/Zend/Controller/Dispatcher/Standard.php(308): Zend_Controller_Action->dispatch('indexAction') #5 /var/www/html/omeka/application/libraries/Zend/Controller/Front.php(954): Zend_Controller_Dispatcher_Standard->dispatch(Object(Zend_Controller_Request_Http), Object(Zend_Controller_Response_Http)) #6 /var/www/html/omeka/application/libraries/Zend/Application/Bootstrap/Bootstrap.php(105): Zend_Controller_Front->dispatch() #7 /var/www/html/omeka/application/libraries/Zend/Application.php(384): Zend_Application_Bootstrap_Bootstrap->run() #8 /var/www/html/omeka/application/libraries/Omeka/Application.php(79): Zend_Application->run() #9 /var/www/html/omeka/index.php(23): Omeka_Application->run() #10 {main}

Any ideas what could be causing this? I specified "omeka" as the core in the solr.xml file.

Here are some screenshots from the admin tools: