フロントエンドとバックエンドの通信がうまくいかない

POST http://ec2 private ip:8000/api/signup net::ERR_CONNECTION_TIMED_OUT

curl -X POST http://ec2 private ip:8000/api/admin_login -H "Content-Type: application/json" -d "selected_user:selected_user,email:email,password:password"

const response = await this.$axios.post('http://ec2 privateip:8000/api/signup',{selected_user: this.selected_user,
 email:this.user.email,      
 password:this.user.password
});
if (response.status === 200){
console.log(response.data.message);
this.user.email = '';
this.user.password = '';
}
else{
console.error("Unexpected status code", response.status);
}

@app.route('/api/signup', methods=['POST'])
@jwt_required()
@cross_origin()
def signup():
  data = request.json
  selected_user=data.get('selected_user')
  if selected_user:        
    selected_user = str(selected_user)
    hashed_password = generate_password_hash(data['password'], method='sha256')
   
    if selected_user == "User":
      user = User(email=data['email'], password=hashed_password)
    if selected_user == "AdminUser":
      user = AdminUser(email=data['email'], password=hashed_password)
    db.session.add(user)
    db.session.commit()
    return jsonify({'message':'New user created'})