Backend Server-Side Code
The following is my server-side code. Below it, you can find the client-side code along with the error that is being displayed. I am having trouble identifying what the issue might be.
app.post("/service", async (res, req) => {
const newService = req.body;
const result = await databaseCollection.insertOne(newService);
res.send(result);
});
Frontend Client-Side Code
fetch("http://localhost:5000/service", {
method: "POST", // or 'PUT'
headers: {
"Content-Type": "application/json",
},
body: JSON.stringify(data),
})
.then((response) => response.json())
.then((result) => {
console.log("Success:", result);
})
.catch((error) => {
console.error("Error:", error);
});
};
Error Details
(node:5388) UnhandledPromiseRejectionWarning: TypeError: Cannot read property '_id' of undefined
at E:\htmll\Assignment_11\Server\myapp\node_modules\mongodb\lib\operations\common_functions.js:64:17
at Array.map (<anonymous>)
at prepareDocs (E:\htmll\Assignment_11\Server\myapp\node_modules\mongodb\lib\operations\common_functions.js:63:17)
at new InsertOneOperation (E:\htmll\Assignment_11\Server\myapp\node_modules\mongodb\lib\operations\insert.js:42:74)
at Collection.insertOne (E:\htmll\Assignment_11\Server\myapp\node_modules\mongodb\lib\collection.js:149:64)
at E:\htmll\Assignment_11\Server\myapp\index.js:37:47
at Layer.handle [as handle_request] (E:\htmll\Assignment_11\Server\myapp\node_modules\express\lib\router\layer.js:95:5)
at next (E:\htmll\Assignment_11\Server\myapp\node_modules\express\lib\router\route.js:144:13)
at Route.dispatch (E:\htmll\Assignment_11\Server\myapp\node_modules\express\lib\router\route.js:114:3)
at Layer.handle [as handle_request] (E:\htmll\Assignment_11\Server\myapp\node_modules\express\lib\router\layer.js:95:5)
(node:5388) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 2)