I have a problem with the website, an error appears

[SXM]

I have a problem with the website when the client confirm the order (the last step to pay) the error on line 102 appear, It is like that:

 

Fatal error: Call to a member function call_api() on a non-object in /home/webpage/public_html/webpage.com/checkout_process.php on line 102

 

It happens when I select the cash or check option.

 

Please help me!! :thumbsup: :thumbsup:

 

Thank you

 

SXM