expo app can't upload image files

Hello everyone!

Please. I am trying to upload an image file to a Node server with some basic user information kind of like updating a profile. when I was updating the profile without an image/photo it works fine. but once I selected an image (on android) it gives an error saying (Network Error). but on ios, it gets uploaded but the image uploaded is showing a blank screen. because I am getting the image link as a response after it get uploaded.

I have tried to use Form Data instead of JSON. still same

here are my image picker codes:

        // No permissions request is necessary for launching the image library
        let result = await ImagePicker.launchImageLibraryAsync({
          mediaTypes: ImagePicker.MediaTypeOptions.Images,
          allowsEditing: true,
          aspect: [4, 3],
          quality: 1,
        if (!result.cancelled) {


and then the form action:

    const Fullname = this.state.Firstname+','+this.state.Lastname;
            //    process file
              let localUri = this.state.file;
              let filename = localUri.split('/').pop();
              let match = /\.(\w+)$/.exec(filename);
              let type = match ? `image/${match[1]}` : `image/jpeg`;
              const url= Platform.OS === 'android'
             ? localUri
             : localUri.replace('file://', '');

              const form = new FormData();
                 name: filename, 
              form.append("fullName", this.state.Firstname !== null ? Fullname : this.state.Lastname);
              form.append("phone", this.state.Phone);
              form.append("email", this.state.Email);

my heaer:

defaultHeader = {
   "Accept": "application/json",
  "Cache-Control": "no-cache",
  'Content-Type': "multipart/form-data'",
  "authorization": ""}

I am using Fetch.

thank you

@adamjnav did you solved the problem. I am also facing this issue on android 11