UMG keep asking weird Message when I use my custom asset

An object [Earth_Momma_DistanceField] of class [Font] already exists in file [/Game/Font_NCFT/Earth_Momma_DistanceField]. Do you want to replace the existing object? If you click ‘Yes’, the existing object will be deleted. Otherwise, click ‘No’ and choose a unique name for your new object.

my images, fonts, they ask weird this weird message and if I press Yes, it change it into something…

If I press No, which does nothing.

Help Me please.

How can I avoid this kind of message and use my custom assets?

edit -> font has workaround… but not images… they ask similar questions

I get into the same trouble. Does someone knows the reason?