I need communication with Farms to get prices

A PHP Error was encountered

Severity: Warning

Message: Invalid argument supplied for foreach()

Filename: includes/build_resources.php

Line Number: 247

Backtrace:

File: /home/farmtab/exchange.farmtable.com.au/public_html/application/views/includes/build_resources.php
Line: 247
Function: _error_handler

File: /home/farmtab/exchange.farmtable.com.au/public_html/application/views/single_topic.php
Line: 2864
Function: include

File: /home/farmtab/exchange.farmtable.com.au/public_html/application/controllers/Topic.php
Line: 523
Function: view

File: /home/farmtab/exchange.farmtable.com.au/public_html/index.php
Line: 315
Function: require_once