Uncaught ErrorException on debug.css path

[paulalbinson]

PHP Version

8.4

CodeIgniter4 Version

4.6.0

CodeIgniter4 Installation Method

Composer (using codeigniter4/appstarter)

Which operating systems have you tested for this bug?

Linux

Which server did you use?

fpm-fcgi

Database

No response

What happened?

app/Views/errors/html/production.php:10 produces a PHP Fatal error: Uncaught ErrorException due to the line attempting to unlink app/Views/errors/html/debug.css, which is failed as the folder is not writable, nor should it be, This is not the intended action.

The problematic code is:

<style>
        <?= preg_replace('#[\r\n\t ]+#', ' ', file_get_contents(__DIR__ . DIRECTORY_SEPARATOR . 'debug.css')) ?>
</style>

This should pull the contents of this file into a style tag; however, as the error shows, it appears to be triggering an unlink of the file for some reason.

Steps to Reproduce

See above.

Expected Output

Loading of CSS

Anything else?

No response

[paulbalandan]

Can you provide more context on this, like reproduction steps?

By the first look on this, it seems you just need to chown the directory (which I think should already have been).

[paulbalandan]

No response received. Closing.

[paulalbinson]

Sorry for the delay in responding. Reproduction steps are in the original post. Why would I need to chown the directory? This is meant to be code to include some CSS, not to delete a file, hence the issue report. If this code were to work properly, it'd read the file and place its contents into a CSS style tag, rather than what it actually does, which is attempt to unlink the CSS file. I will not give the folder deletion rights, as there should be no deletions happening in this folder; the CSS files should be read, and there are read permissions for them.

[paulbalandan]

Sorry for the confusion. For the reproduction steps, I meant to ask the whole context on what's happening or what are you doing before the crash occurred.

[paulalbinson]

As per the purpose of this code which provides a page when errors occur, informing the user that the page ran into trouble, this problem occurs whenever an error page is triggered.

[paulbalandan]

Here's a reproducer I have done:

1. Run composer create-project codeigniter4/appstarter ci4-app
2. cd ci4-app
3. cp env .env
4. Ensure we're on production

$ ./spark env

CodeIgniter v4.6.1 Command Line Tool - Server Time: 2025-05-02 17:18:01 UTC+00:00

Your environment is currently set as production.

5. Induce an error in the home controller:

<?php

namespace App\Controllers;

class Home extends BaseController
{
    public function index(): string
    {
        return $a;
        // return view('welcome_message');
    }
}

6. Run ./spark serve

Error appears as expected.

Unless you can give us clear reproduction steps (which I have asked for twice now), then there's hardly any help we could provide you.

[paulalbinson]

Thanks. I tested it with your test and all is fine and weirdly the problem has vanished from the site I was having an issue with, so I don't know what fixed it as I don't think I changed anything to fix it, most odd. Many thanks.