[Python] Flask Api working Half the time- works flawlessly when sending post with python but...

Hi I created an api that scrapes a website and returns values as a JSON file using python flask For simple testing I set up a web Interface where the JSON is returned using that same API and it works flawlessly, but when I use the Javascript Fetch function in my react app to call it I keep getting different erros on the server side.

import requests
import json
data = {
'act': '',
'pw': '',
'req': 'grades',
}

response = requests.post('http://127.0.0.1:5000/', data=data)
print(response.text)


This is they python code that workds perfectly

and here is the javascript code that is not working properly

useEffect(() => {

fetch('http://127.0.0.1:5000/', {
method: 'POST',

body: new URLSearchParams({
'act': '',
'pw': '',
'req': 'grades'
})
}).then(response => {
console.log('Response:', response)
return response.json();
}).then(response => console.log(response))
}, []);


They are sending the exact Same request but getting different reponses

What it should look like(what I get when running the python code

What happens when I run the Javascript code

For refrence Here is the github repo with my API https://github.com/amaheshwari01/POWERSCRAPER

EDIT: My Javascript code is written with react

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