I have installed the module in opencart 1.5.5.1, and there is no links shown for the product share from mobile. But is shown as below. 

<b>Notice</b>: Undefined variable: language_id in <b>var://catalog_view_theme_default_template_module_whatsapp_tpl</b> on line <b>3</b><b>Notice</b>: Undefined index:  in <b>var://catalog_view_theme_default_template_module_whatsapp_tpl</b> on line <b>3</b>

showing like this in whatsapp not getting any link of website...

Help me solve this. Where to find the route file..

Using opencart 2.0.3.1 with multi language and have the same issue with  Error in line 44

<?php $data['language_id']=$this->config->get('config_language_id');?>

Hope that someone can help

Hello Mohamed,

Can you please provide us with the error that you are getting? Thank you.