Use parent Builder's constructor. Ours was incomplete in that it didn't initialize $this->grammar

Author: mnphpexpert

src/Jenssegers/Mongodb/Schema/Builder.php

@@ -7,14 +7,6 @@
 
 class Builder extends \Illuminate\Database\Schema\Builder
 {
-    /**
-     * @inheritdoc
-     */
-    public function __construct(Connection $connection)
-    {
-        $this->connection = $connection;
-    }
-
     /**
      * @inheritdoc
      */