Module installation error: undefined method Cart::debug_backtrace_url()

[funtech]

Hi, 

I have bought a module called: installement payment when ordering from addons.prestashop.com, but i have error: Uncaught Error: Call to undefined method Cart::debug_backtrace_url() in front page after i installed this module successfully. 

The full error message from the web page is like: 

 

 

The problem is after i installed this module, the web page went down but the back office working fine. 

Could any one tell me what with these error message about? 

Prestashop version: v1.6.1 

Module name: Installment payment when ordering 

 

thanks 

 

 

Edited October 19, 2018 by funtech (see edit history)

[Rolige]

Hello:

Well, your module is calling some function that is not present in your Cart class of your Prestashop version. Make sure the module is compatible eith your Pestashop version and contact the module developer to fix it.

Or just comment that line in the file of the error to see what happen, but if that kind of function has been called then a previous error should be happen and what module try to do is show the full PHP stack. That´s what logic tells me but you should check the source code to be sure.

Regards