I tried to check an error uploading to aws3. The only manipulation I success to check is after I dropped the files, to change the name of one of them.There are another options to check uploading error files?
If you mean after the the aws uploader tried to upload the file, then use the .on("upload-error") function.
.on('upload-error', (error) => { console.log(error); })
If you mean after the the aws uploader tried to upload the file, then use the .on("upload-error") function.