[PS 8.2] "Unable to generate a URL for route" error creating a module with modern configuration

[miraclecity]

Hi, good day everyone.

I'm new to Prestashop. I'm trying to develop a module using Symfony and Prestashop's modern configuration, but I'm stuck in a bizarre error and I'm losing my mind.

I deployed a Prestashop 8.2.0 installation in a AWS EC2 instance. Works fine. Then I upload/install my module. Also works fine. Then I uninstall my module. Everything OK. Then I upload/install my module again and I get the error.

[HTTP 500 Internal Server Error] RouteNotFoundException: Unable to generate a URL for the named route "demo_configuration_form_simple" as such route does not exist.

Logs:
- Uncaught Exception: Unable to generate a URL for the named route "demo_configuration_form_simple" as such route does not exist.
- Uncaught PHP Exception Symfony\Component\Routing\Exception\RouteNotFoundException: "Unable to generate a URL for the named route "demo_configuration_form_simple" as such route does not exist." at /prestashop/vendor/symfony/symfony/src/Symfony/Component/Routing/Generator/CompiledUrlGenerator.php line 50

Notes:
- When installing my module in a fresh Prestashop installation and pressing "configure", my module works fine.
- If I uninstall my module and install it again (or just reinstall), it thows the aforementioned error.
- Clearing Prestashop's cache makes the error dissapear, but appears again every time I reinstall the module.

Here is the thing that puzzles me most: I thought of testing the module reinstall process on other computers, and surprise, some of them throw the error while others do not! I don't even know how that is possible. My Prestashop is on Amazon Web Services. How can the computer that clicks on uninstall-install make a difference? I tried different browsers, incognito mode, clearing the browser's cookies and cache, but no luck. I should note that I also tried all of this in a localhost and get the same results.

I revised my code a thousand times but I don't see anything wrong that could trigger that error. Before posting here, I tried to create a new module from scratch following this official tutorial: https://devdocs.prestashop-project.org/8/modules/creation/adding-configuration-page-modern/

The result is the same. I literally copy-pasted the tutorial, nothing more, and I still get that error. Could I be doing something wrong? Any assistance would be greatly appreciated.

I've attached the module I created following the tutorial to this message.

Thank you so much for your time and help!

demosymfonyformsimple.zipFetching info...