File stay in my folder after deleting but deleted after restart Node JS

Question

I have a function that loops over an array that contains paths to files, then I delete each of them. The files are uploaded with Multer in a folder "assets/temp/" Here is my delete method using fs :

exports.unlinkFiles = (filesPathsArr) => {
    try {
        filesPathsArr.forEach((filePath) => {
            if (fs.existsSync(filePath)) {
               fs.unlinkSync(filePath)
               console.log('File deleted : ', filePath)
            }
        })
    } catch (error) {
        throw error
    }
}

My input for example :

['assets\temp\pexelsphoto19886811645117462309.jpg', 'assets\temp\relaxtriptest1645118333937.mp3']

My output :

File Deleted : assets\temp\pexelsphoto19886811645117462309.jpg
File Deleted : assets\temp\relaxtriptest1645118333937.mp3

But in my folder temp :

+ And if I try to open the file, it say 'Enable to read..'

+ When I restart the server, the file just disapear

Is this just a local problem with my machine, maybe the problem will go away in production? Or maybe it's just a small detail that I shouldn't worry about? Or is it something else ?