Warning: Use of undefined constant all - assumed 'all' (this will throw an Error in a future version of PHP)

Hi there, I’m new to development and I’m just trying to set a new website through local as it as recommended. Now, I’ve been trying to start setting up my setting and linking the css and js files through the function document, which it worked, but when I go to check the site I get a big warning that says shows the following: Warning: Use of undefined constant all - assumed ‘all’ (this will throw an Error in a future version of PHP)

And below that, a big table full of variables:

Is there any way to solve this? I’m sorry, I’m really new to development and just want to know how to fix this.

Thank you in advance.

The error is in your theme, ExtremePro.

Thanks @afragen! but I would like to know how could it be? I’m barely getting the code started, the files don’t have that much on them.

Is due to a line of code? I’ve been going through it and I can’t seem to find what could be wrong.

EntrenaPro.zip (1.9 KB)

If possible, could you please tell me what should I check? I’ve been also following a tutorial and I’ve made sure that I’m following the right steps but I can’t find the error.

Thanks you!