An asset already exists at the import location

So what happend is. when I Delete the original filename. then I try to import new one agian. I got the error said "An asset already exist at the import location.
this happend at every folder I try to import no matter in what location it still got this problem
already use “Fix up redirectois in Folder” doest help
already delete the binaries folder. doest help

this look like road block. I cant import my asset.
is this new bug???