generator/FakerGenerator.php
private function resolvePath($path_alias, $file_name)
    {
        $path = \Yii::getAlias($path_alias, false);
        $path = $path ? realpath($path) : $path;
        $file_name = !preg_match('/\.php$/i', $file_name) ? $file_name . '.php' : $file_name;

        if (!$path || !is_dir($path) || !file_exists($path . '/' . $file_name)) {
            throw new Exception("Faker template \"{$path}/{$file_name}\" not found");
        }

        return $path . '/' . $file_name;
    }
private function resolvePath($path_alias, $file_name)
    {
        $path = \Yii::getAlias($path_alias, false);
        $path = $path ? realpath($path) : $path;
        $file_name = !preg_match('/\.php$/i', $file_name) ? $file_name . '.php' : $file_name;

        if (!$path || !is_dir($path) || !file_exists($path . '/' . $file_name)) {
            throw new Exception("Faker template \"{$path}/{$file_name}\" not found");
        }

        return $path . '/' . $file_name;
    }
Resolve Yii aliases and check template file
@param $path_alias
@return string
@throws Exception