diff --git a/app/Console/Commands/SolrIndexBuilder.php b/app/Console/Commands/SolrIndexBuilder.php
index 2f3deda..595b47b 100644
--- a/app/Console/Commands/SolrIndexBuilder.php
+++ b/app/Console/Commands/SolrIndexBuilder.php
@@ -5,6 +5,11 @@ namespace App\Console\Commands;
 use Illuminate\Console\Command;
 use App\Models\Dataset;
 
+use Illuminate\Support\Facades\Log;
+use App\Library\Search\SolariumAdapter;
+use \Exception;
+
+
 class SolrIndexBuilder extends Command
 {
     /**
@@ -43,17 +48,21 @@ class SolrIndexBuilder extends Command
         // update statistics table
         foreach ($datasets as $dataset) {
             $datasetId = $dataset->id;
-            $time = new \Illuminate\Support\Carbon();
-            $dataset->server_date_modified = $time;
-            $dataset->save();
-            // try {
-            //     // Opus_Search_Service::selectIndexingService('onDocumentChange')
-            //     $service = new SolariumAdapter("solr", config('solarium'));
-            //     $service->addDatasetsToIndex($dataset);
-            // } catch (Exception $e) {
-            //     Log::debug(__METHOD__ . ': ' . 'Indexing document ' . $datasetId . ' failed: ' . $e->getMessage());
-            // }
+            // $time = new \Illuminate\Support\Carbon();
+            // $dataset->server_date_modified = $time;
+            // $dataset->save();
+            // Log::debug(__METHOD__ . ': ' . 'Adding index job for dataset ' . $datasetId . '.');
+
+            try {
+                // Opus_Search_Service::selectIndexingService('onDocumentChange')
+                $service = new SolariumAdapter("solr", config('solarium'));
+                $service->addDatasetsToIndex($dataset);
+            } catch (Exception $e) {
+                $this->error(__METHOD__ . ': ' . 'Indexing document ' . $dataset->id . ' failed: ' . $e->getMessage());
+            }
         }
         return 0;
     }
+
+    
 }
diff --git a/app/Http/Middleware/EncryptCookies.php b/app/Http/Middleware/EncryptCookies.php
index b540c39..daf435e 100644
--- a/app/Http/Middleware/EncryptCookies.php
+++ b/app/Http/Middleware/EncryptCookies.php
@@ -11,6 +11,6 @@ class EncryptCookies extends BaseEncrypter
      * @var array
      */
     protected $except = [
-        //
+        'XDEBUG_SESSION'
     ];
 }
diff --git a/app/Library/Search/SolariumAdapter.php b/app/Library/Search/SolariumAdapter.php
index 5287cbe..da8a3f4 100644
--- a/app/Library/Search/SolariumAdapter.php
+++ b/app/Library/Search/SolariumAdapter.php
@@ -4,10 +4,12 @@ namespace App\Library\Search;
 
 //use App\Library\Util\SolrSearchQuery;
 use App\Library\Search\SearchResult;
-use App\Library\Util\SearchParameter;
-use Illuminate\Support\Facades\Log;
 use App\Library\Search\SolariumDocument;
+use App\Library\Util\SearchParameter;
 use App\Models\Dataset;
+use Illuminate\Support\Facades\Log;
+use Solarium\Core\Client\Adapter\Curl;
+use Symfony\Component\EventDispatcher\EventDispatcher;
 use \Solarium\QueryType\Select\Query\Query;
 
 class SolariumAdapter
@@ -22,7 +24,11 @@ class SolariumAdapter
     public function __construct($serviceName, $options)
     {
         $this->options = $options;
-        $this->client = new \Solarium\Client($options);
+        $adapter = new Curl();
+        $dispatcher = new EventDispatcher();
+
+        $this->client = new \Solarium\Client($adapter, $dispatcher, $options);
+        // $this->client = new \Solarium\Client($options);
 
         // ensure service is basically available
         $ping = $this->client->createPing();
@@ -61,25 +67,30 @@ class SolariumAdapter
         $slices = array_chunk($datasets, 16);
         // update documents of every chunk in a separate request
         foreach ($slices as $slice) {
+            // get an update query instance
             $update = $this->client->createUpdate();
 
             $updateDocs = array_map(function ($rdrDoc) use ($builder, $update) {
-                $solarium_document =  $update->createDocument();
+                $solarium_document = $update->createDocument();
                 return $builder->toSolrUpdateDocument($rdrDoc, $solarium_document);
             }, $slice);
 
-            // adding the document to the update query
+            // add the documents and a commit command to the update query
             $update->addDocuments($updateDocs);
-             // Then commit the update:
-             $update->addCommit();
-             $result = $this->client->update($update);
+            $update->addCommit();
+
+            // this executes the query and returns the result
+            $result = $this->client->update($update);
+            echo '<b>Update query executed</b><br/>';
+            echo 'Query status: ' . $result->getStatus() . '<br/>';
+            echo 'Query time: ' . $result->getQueryTime();
 
             //$this->execute($update, 'failed updating slice of documents');
         }
 
         // finally commit all updates
         // $update = $this->client->createUpdate();
-       
+
         // $update->addCommit();
 
         // $this->execute($update, 'failed committing update of documents');
@@ -196,7 +207,7 @@ class SolariumAdapter
         $result = null;
         try {
             $result = $this->client->execute($query);
-        } catch (\Solarium\Exception\HttpException $e) {
+        } catch (\Solarium\Exception\HttpException$e) {
             sprintf('%s: %d %s', $actionText, $e->getCode(), $e->getStatusMessage());
         } finally {
             return $result;
@@ -207,7 +218,7 @@ class SolariumAdapter
         // }
     }
 
-    protected function processQuery(\Solarium\QueryType\Select\Query\Query $query): SearchResult
+    protected function processQuery(\Solarium\QueryType\Select\Query\Query$query): SearchResult
     {
         // send search query to service
         $request = $this->execute($query, 'failed querying search engine');
diff --git a/app/Library/Search/SolariumDocument.php b/app/Library/Search/SolariumDocument.php
index cf605e0..cfaddc4 100644
--- a/app/Library/Search/SolariumDocument.php
+++ b/app/Library/Search/SolariumDocument.php
@@ -3,7 +3,7 @@
 namespace App\Library\Search;
 
 use App\Models\Dataset;
-use Solarium\QueryType\Update\Query\Document\Document;
+use Solarium\QueryType\Update\Query\Document;
 use Solarium\QueryType\Update\Query\Document\DocumentInterface;
 
 class SolariumDocument extends SolrDocumentXslt
@@ -13,10 +13,10 @@ class SolariumDocument extends SolrDocumentXslt
         parent::__construct($options);
     }
     
-    public function toSolrUpdateDocument(Dataset $rdrDataset, DocumentInterface $solrDoc)
+    public function toSolrUpdateDocument(Dataset $rdrDataset, $solrDoc)
     {
         if (!($solrDoc instanceof Document)) {
-            throw new \Exception('provided Solr document must be instance of Solarium Update Document');
+            throw new \Exception(get_class($solrDoc) . 'provided Solr document must be instance of Solarium Update Document');
         }
         
         // convert Opus document to Solr XML document for supporting custom transformations