Axios request response 401 in React Native app, but working in Postman and browser?

Request failed with status code 401
this is the error that i am getting in my react native application in response to this api call

     const fetchData = async () => {
            try {
                const response = await axios.get(`${API_URL}/general-setting`, {
                    headers: {
                        'Accept': 'application/json',
                    }
                });
                const generalSetting = response.data.data.general_setting;
                const newTheme = {
                    baseColor: `#${generalSetting.base_color}`,
                    secondColor: `#${generalSetting.secondary_color}`,
                };
                setTheme(newTheme);
            } catch (error) {
                Alert.alert('Error Fetching Theme', 'Please check your internet connection and try again.');
            }
        };

but in Postman or in the browser I am getting the response correctly. Here it is
Api response in postman

I tried the same api in browser, its working there also but not in my react native application