What could be the reason for getting 500 server error? - node.js

Question

Im trying to integrate stripe payment using axios with node.js but at the end Im getting back an error message: Request failed with status code 500, although in the request payload I do see a token data filled properly.
here is my node.js code:
const express = require("express");
const cors = require("cors");
const bodyParser = require("body-parser");
const path = require("path");
if (process.env.NODE_ENV !== "production") require("dotenv").config();
const stripe = require("stripe")(process.env.STRIPE_SECRET_KEY);
const app = express();
const port = process.env.PORT || 5000;
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: true }));
app.use(cors());
if (process.env.NODE_ENV === "production") {
app.use(express.static(path.join(__dirname, "client/build")));
app.get("*", function (req, res) {
res.sendFile(path.join(__dirname, "client/build", "index.html"));
});
}
app.listen(port, (error) => {
if (error) throw error;
console.log("Server running on port " + port);
});
app.post("/payment", (req, res) => {
const body = {
source: req.body.token.id,
amount: req.body.amount,
currency: "eur",
};
stripe.charges.create(body, (stripeErr, stripeRes) => {
if (stripeErr) {
res.status(500).send({ error: stripeErr });
} else {
res.status(200).send({ success: stripeRes });
}
});
});
and here is my client side code using axios library and stripe-checkout pre-built component
const priceForStripe = price * 100;
const publishableKey = "pk_test_i28ouERO9Dli1OlxDdGM7HFA00hCEjnkrw";
const onToken = (token) => {
axios({
url: "/payment",
method: "POST",
headers: { "content-type": "application/json" },
data:{
amount: priceForStripe,
token,
},
})
.then((response) => {
alert("Payment was successfull !!");
})
.catch((error) => {
console.log("Payment error:", error);
alert("There was an issue with your payment");
});
};
return (
<StripeCheckout
label="PAY NOW"
name="Shibukas&Co"
billingAddress
shippingAddress
image="https://sendeyo.com/up/d/f3eb2117da"
description={`Your total price is €${price}`}
amount={priceForStripe}
panelLabel="Pay Now"
token={onToken}
stripeKey={publishableKey}
/>
);
};```