New installation Error 500 after disabling default modules

[TVBZ]

Hello,

I am new to PrestaShop. Need a webshop and thought I give it a try.

I installed PrestaShop 1.7.6.5 (latest stable version) and started configuring:

1. Add and removed some language
2. Updated all modules that needed update
3. Uninstalled Slideshow module, banner module and text module

After this last step (not sure if I disabled or unistalled) the backoffice shows error 500, on modules page where I was but also on default page index.php.
So the whole backoffice is now error? I have not even installed anything or added any product.

The frontend is still good. The custom text module is still there. So my best guess is a result of disabling or uninstalling that module.
 

Is this normal behavior? 
Are some of those default modules required to keep the backoffice up and running?
Any insights? Thanks.

 

I am using php 7.3.19
Memory limit = 128MB
Max exec time = 300

Edited June 30, 2020 by TVBZ (see edit history)

[TVBZ]

I reinstalled PrestaShop, uninstalled modules before updating them and it was resolved.
Luckily it was a fresh install. I can only imagine how frustrating this would after putting in many hours to add products and such.

Anyway.. Problem resolved. (not the cause)