The development server returned response error code: 500 in react native

Question

I am using react-native framework for developing my android app. I want to use react-native-material-design library for making Toolbar wit

Answer 1

One of the reasons why I was having this error was because I imported 'react-native' library twice.

import { View, Text, ActivityIndicator } from "react-native";
import { View, Text, ActivityIndicator, TouchableOpacity, StyleSheet } from "react-native";

I don't know If this can really cause this problem but removing the redundant line of import solved this issue for me.