improved error reporting of elasticsearch ActiveFixture

extensions/elasticsearch/ActiveFixture.php

@@ -101,7 +101,11 @@ class ActiveFixture extends BaseActiveFixture
             $options = [];
             $id = isset($row[$idField]) ? $row[$idField] : null;
 
+            try {
                 $response = $this->db->createCommand()->insert($this->index, $this->type, $row, $id, $options);
+            } catch(\yii\db\Exception $e) {
+                throw new \yii\base\Exception("Failed to insert fixture data \"$alias\": " . $e->getMessage() . "\n" . print_r($e->errorInfo, true), $e->getCode(), $e);
+            }
             if ($id === null) {
                 $row[$idField] = $response['_id'];
             }