我有一个CodeIgniter项目假定2nd_c，另一个CodeIgniter项目假定1st_c。我想将文件和图像上载到1st_c项目，但它引发路径错误“The upload path does not appear be valid”我已加载“upload”库，下面是我的代码

$config=array();

                    $config['upload_path'] = '../assets/uploads/jobs';

                    $config['allowed_types'] = 'gif|jpg|jpeg|png';

                    $config['overwrite']     = false;

                    $config['max_size']      = 3000;

                    $config['remove_spaces'] = true;

                    $config['max_filename']   = 10;

                    $config['file_ext_tolower'] = true;

                    $this->upload->initialize($config);
                    
                    if($this->upload->do_upload('pic')){

                    $udata = array('upload_data' => $this->upload->data());                

                    $jobimage = $udata['upload_data']['file_name'];            

                    $data['j_image'] = $jobimage;     

                   }else{

                       $errors = $this->upload->display_errors();

                       echo "<pre>"; print_r($errors); echo "</pre>";

                       exit;

                    }

“../assets/uploads/jobs”这是我的1st_c项目，它在本地主机上工作正常，但在服务器上抛出错误。我已经尝试了“FCPATH”，但没有运气。