Error invalid argument supplied for foreach()

Tolong Dong Teman mengapa saat menggunakan foreach selalu begini =

A PHP Error was encountered

Severity: Warning

Message: Invalid argument supplied for foreach()

Filename: supplier/v_list.php

Line Number: 14

Backtrace:

File: C:\xampp\htdocs\ci-client\application\views\supplier\v_list.php Line: 14 Function: _error_handler

File: C:\xampp\htdocs\ci-client\application\controllers\Supplier.php Line: 15 Function: view

File: C:\xampp\htdocs\ci-client\index.php Line: 315 Function: require_once

Sudah di cek berulang kali tapi tetap begini