"The File is already Exists" warning Problem

hi, so somehow my macbook pro start acting weird right now, currently every time i copy and paste my files to another folder or place, the system tell me this "The File is already Exists" warning even the folder is completely new or empty and i still get this warning ... i tried to see is there any hidden file (maybe) from terminal but no luck...

is there any way to fix this problem?

thank you

i got this warning almost everytime when i paste a folder with multiple file in it.. to another place..