Im using Uppy XHR combined with Ajax (that interfaces with a PHP script) to upload files.

Now, I would like that Uppy consideres what happens in the php script, because even throwing a fatal error, it still turns out that the file was loaded correctly.

JQuery code

var uppy = new Uppy.Core()
    .use(Uppy.Dashboard, {
      inline: true,
      target: '#drag-drop-area'
    })
    .use(Uppy.XHRUpload, {
       method: 'post',
       endpoint: SCRIPT_PATH
    })
    .on('file-added', (file) => {
       uppy.setFileMeta(file.id, {
         size: file.size,
         id: id_product
       })
    })
    .on('complete', (result) => {
       console.log('Upload complete! We’ve uploaded these files:', result.successful);
       console.log('failed files:', result.failed)
    })