Additional catches

app/Import/Transformer/Csv/ClientTransformer.php

@@ -34,6 +34,9 @@ class ClientTransformer extends BaseTransformer
             throw new ImportException('Client already exists');
         }
 
+        if(!is_array($data))
+            throw new ImportException('Empty row, or invalid data encountered.');
+        
         $settings = ClientSettings::defaults();
         $settings->currency_id = (string) $this->getCurrencyByCode($data);