exception when debugging opencart 3

I'm trying to debug an opencart 3 app with a theme built on it using twig. When the app starts, the twig/Autoloader.php throws an exception:

The Twig_Autoloader class is deprecated since version 1.21 and will be removed in 2.0. Use Composer instead.

any ideas?

Solution

Deprecated Twig_Autoloader problem has been around in OpenCart for a while now.

But it's just a warning and shouldn't stop you from using Translate Mate, unless you have PHP set to strict mode.

When you load the Translate Mate page, you getting this from the error log right ?