Autoupgrade - From 8.0.5 to 8.1.6 - FO is blank

[AureRita]

Prerequisites

• I understand and accept the project's code of conduct.
• I have already searched in existing issues and found no previous report of this bug.

Describe the bug and add attachments

When I upgrade from a Prestashop version 8.0.5 to 8.1.6 by a major version, I have a blank FO as you can see :

recording.205.webm

FYI : I didn't have this issue with 8.1.5 and 1.7.8.11

Expected behavior

I wish I could use my FO after the upgrade

Steps to reproduce

1. Install a fresh 8.0.5
2. Go to BO > Modules > Modules Manager
3. Install Autoupgrade (1-Click Upgrade)
4. Clic on configure
5. Select the Major version
6. Do the upgrade
7. After the upgrade, clic on view my shop ❌

PrestaShop version(s) where the bug happened

8.0.5

PHP version(s) where the bug happened

7.4 and 8.1

If your bug is related to a module, specify its name and its version

autoupgrade v5.0.1

Your company or customer's name goes here (if applicable).

PS

[Hlavtox]

@AureRita

Avoid reporting "error 500" or "white page" errors - this is a universal error message that does not provide enough information to qualify the issue. Enable debug mode in the Performance section of PrestaShop or manually in /config/defines.inc.php and try again. You should get a proper error message.