Failed to resolved error for something which doesn't even exists...

I am using plasmo with nextjs & am using tailwindcss for styling. in my styles.css i used bg.jpg for my bg image but even after removing the code, even after deleting build folder & .plasmo folder, even after deleting the file & rewriting the styes, I am getting this error. I have attached the images for your ref & thank you for your help in advance.