Failed to save an asset in Game/__ExternalActors__/*

I have an issue when I want to save my project which is using world partition
I got this message

‘/Game/ExternalActors/Maps/MyMap_WP/5/JW/YPXPCDXMEV56RPGQKOBHYE’ (YPXPCDXMEV56RPGQKOBHYE.uasset) failed to save.

0/ I’ve loaded my entire world using World partition details
1/ I’ve checked and I have only one editor running. I’ve also restarted it.
2/ I’ve cleaned up my project file by removing Saved, Intermediate, Derived DataCache folders

This issue occurs with a specific blueprint (which is a subclass of WaterBodyLake).
I tried to rename the blueprint and rename the instance but still I have the same issue