UI Kit Custom Send File error

here is my code

const sendFileFn = (data) => {

  const params = new sdk.FileMessageParams();
  params.fileName = data.name
  params.fileSize = data.size;
  params.mimeType = data.type;
  params.file = data; 
  console.log(params)
  //sendFile(channel.url, params)
  sendFileMessage(channel.url, params)
}

Hello @Hendri_Lee,
Which version of UIKit are you using? We had fixed a similar issue in v1.2.3(Sept 10, 2020)