Why such an error when registering or adding a client to Opencart?

Question

PHP

Hi all. I am learning to pull the layout on Opencart. And when I finished half the site, I found that the registration did not work. And through the admin panel, too, when you add a client, the same thing:

Because of what could this be?

Answer 1

You have an error somewhere in the code, you need to enable error display to understand what's what