sendFile method always mimeType: application/octet-stream

[Gromov812]

Hi! I've tried to send photo via sendFile. Full construction is

 client.sendFile(username, {
          file: data?.bufferFile, // U
          forceDocument: false,
          fileName: `${data?.picName}`, // Picture 2024-08-26 10-25-14.png
          mimeType: `image/${data?.picExt}`, // image/png
          caption: data?.message || "", // ""
          attributes: [new Api.DocumentAttributeFilename({ 
            fileName: `${data?.picName}`, //Picture 2024-08-26 10-25-14.png

           })],
        })

The buffer image i get from front-end via socket.io:

      const reader = new FileReader();
     reader.readAsArrayBuffer(pic);
      reader.onload = async () => {
        const picName = pic.name;
        const picExt = pic.type.split('/');

        const buffer = await pic.arrayBuffer();
        buffer.name = pic.name;

        const bytes = new Uint8Array(buffer);

      }    

So its always sent as file, not a photo. Any ideas to fix it?