Add null variables

app/Console/Commands/HRCCommand.php

@@ -30,6 +30,7 @@ class HRCCommand extends Command
 
     private function prepareInput()
     {
+        if($this->argument('source') != 'null') {
             $source_file = CORE_PATH . '/temp/' . $this->argument('source');
             $data = parse_ini_file($source_file);
 
@@ -40,23 +41,30 @@ class HRCCommand extends Command
             return $data;
         }
 
+        return [];
+    }
+
     private function prepareOutput()
     {
+        if($this->argument('source') != 'null') {
             $source_file = CORE_PATH . '/temp/' . $this->argument('source');
             $data = parse_ini_file($source_file);
 
             if (isset($data['raw_result'])) {
                 return json_decode(base64_decode($data['raw_result']), true);
             }
+        }
 
         return null;
     }
 
     public function save($result)
     {
+        if($this->argument('result') != 'null') {
             $result_file = CORE_PATH . '/temp/' . $this->argument('result');
             file_put_contents($result_file, json_encode($result));
         }
+    }
 
     private function getCoreConfig($name, $default = null)
     {