How should I modify React state? addDoc() called with invalid data - reactjs

Question

I would like to upload a image-file to storage of the firebase and put {title , content, createDate etc} in firestore.
but it seems that state.upload file prevents putting it in firestore.
this.setState({ uploadfile: "" })
The error　says
FirebaseError: Function addDoc() called with invalid data. Unsupported field value: a custom File object (found in field uploadfile in document projects/c0hQXdRAgIe1lIzq1vTy)
class CreateProject extends Component {
state = {
title:'',
content:'',
uploadfile:'',
setImageUrl:'',
}
handleChange = (e) =>{
this.setState({
[e.target.id]: e.target.value
})
}
handleSubmit = (e) =>{
e.preventDefault();
this.setState({ uploadfile: "" })
this.props.createProject(this.state)
this.props.history.push('/')
}
onDrop = acceptedFiles => {
if (acceptedFiles.length > 0) {
this.setState({ uploadfile: acceptedFiles[0] })
}
}
handleSubmitImg = (e) =>{
e.preventDefault()
//this.props.sampleteFunction()
};
parseFile　= (file) =>{
const updatedFile = new Blob([file], { type: file.type });
updatedFile.name = file.name;
return updatedFile;
}
onSubmit = (event) => {
event.preventDefault();
var updatedFile = this.state.uploadfile;
if (updatedFile === "") {
}
console.log("aaaaaaaaaaaa"+updatedFile)
const uploadTask = storage.ref(`/images/${updatedFile.name}`).put(updatedFile);
uploadTask.on(
firebase.storage.TaskEvent.STATE_CHANGED,
this.next,
this.error,
this.complete
);
};
next = snapshot => {
const percent = (snapshot.bytesTransferred / snapshot.totalBytes) * 100;
};
error = error => {
console.log(error);
};
complete = () => {
var updatedFile = this.state.uploadfile
storage
.ref("images")
.child(updatedFile.name)
.getDownloadURL()
.then(fireBaseUrl => {
this.setState({ setImageUrl: fireBaseUrl })
//this.state.setImageUrl(fireBaseUrl);
});
};
render() {
const maxSize = 3 * 1024 * 1024;
const dropzoneStyle = {
width: "100%",
height: "auto",
borderWidth: 2,
borderColor: "rgb(102, 102, 102)",
borderStyle: "dashed",
borderRadius: 5,
}
const {auth} = this.props
console.log("UP"+this.state.uploadfile );
if(!auth.uid) return <Redirect to="/signin" />
return (
<Dropzone
onDrop={this.onDrop}
accept="image/png,image/jpeg,image/gif,image/jpg"
inputContent={(files, extra) => (extra.reject ? 'Image files only' : 'Drag Files')}
styles={dropzoneStyle}
minSize={1}
maxSize={maxSize}
>
{({ getRootProps, getInputProps }) => (
<div className="container">
<form onSubmit={this.handleSubmit} className="white">
<h5 className="grey-text text-darken-3">
Create Project
</h5>
<div className="input-field">
<label htmlFor="title">Title</label>
<input type="text" id="title" onChange={this.handleChange}/>
</div>
<div className="input-field">
<label htmlFor="content">Project Content</label>
<textarea id="content" className="materialize-textarea" onChange={this.handleChange}></textarea>
</div>
<div className="input-field">
<button className="btn pink lighten-1 z-depth-0">Create</button>
</div>
</form>
<div {...getRootProps()}>
<input {...getInputProps()} />
<p>File Drag</p>
{this.state.uploadfile ? <p>Selected file: {this.state.uploadfile.name}</p> : null}
{this.state.uploadfile ? (<Thumb key={0} file={this.state.uploadfile } />) :null}
</div>
<form onSubmit={this.onSubmit}>
<button>Upload</button>
</form>
</div>
)}
</Dropzone>
)
}
}
const matchStateToProps = (state) => {
return{
auth: state.firebase.auth
}
}
const mapDispatchToProps = (dispatch) => {
return{
createProject: (project) => dispatch(createProject(project))
}
}
export default connect(matchStateToProps, mapDispatchToProps)(CreateProject)
Action
export const createProject = (project) => {
return (dispatch, getState, { getFirebase, getFirestore }) => {
// make async call to database
const firestore = getFirestore();　
const profile = getState().firebase.profile;
const authorId = getState().firebase.auth.uid;
firestore.collection('projects').add({
...project,
authorUserName: profile.userName,
authorId: authorId,
createdAt: new Date()
}).then(() => {
dispatch({ type: 'CREATE_PROJECT', project})
}).catch((err) => {
dispatch({ type: 'CREATE_PROJECT_ERROR', err })
})
}
};