OpenCart Community

i'm using opencart 2.0, and PayPal Payflow Pro

but when i pay, i got below problem, please see attachment.

thank you.

The error say's it all. The variable text_loading is not being found. Check the variable in the controller and verify that it is being resourced.

thank you for the reply.

1. we didn't change any coding for this part, why it doesn't work?
2. what do you mean controller?
3. please guide me, what i should do, thank you.