Reports

I found the setup issue

app.use(
  fileUpload({
    useTempFiles: true,
    safeFileNames: /\\/g,
    preserveExtension: true,
    tempFileDir: `${__dirname}/uploadspace/temp`
  })

}

Here, preserveExtension: true, preserveExtension: Preserves filename extension when using safeFileNames option. If set to true, will default to an extension length of 3. So, to fix this I need to defined a Number for preserveExtension (in my case 4 is sufficient)

Fix:

var app = express();
app.use(
  fileUpload({
    useTempFiles: true,
    safeFileNames: /\\/g,
    preserveExtension: 4,
    tempFileDir: `${__dirname}/uploadspace/temp`
  })
);

79519252