Help to resign a save : error message "YOU CANNOT USE THIS SAVE"

Hello everyone,
I'm posting to ask for help about a save set I found on this site :

EU 𝑨𝒓𝒔𝒍𝒂𝒏 𝑻𝒉𝒆 𝑾𝒂𝒓𝒓𝒊𝒐𝒓 𝒐𝒇 𝑳𝒆𝒈𝒆𝒏𝒅 - 𝑺𝒂𝒗𝒆 𝒔𝒆𝒕 + 𝑷𝒍𝒂𝒕𝒊𝒏𝒖𝒎 𝑺𝒂𝒗𝒆 [𝑪𝑼𝑺𝑨03866]​

I can resign the saves via GARLIC or SAVELY like I usually do, but once I put it in my ps4 I encouter the message once i launch the game, that you can see in the title, and some other message saying I need to create a new file. I dont get why the save doesn't work, as it is the same CUSA as my game also. There's also no error message when I resign, unzip or transfert the save on USB or on my ps4...

Have you ever encountered this message on another game ? How can I make the save work ?

Than k you for your help
Good play everyone.