busboy on field and on file not firing - node.js

Question

It worked yesterday, and now it stopped without any changes made to the code. What is going on?
Client
async function uploadFile(file) {
let formData = new FormData();
formData.append("recordUid", recordUid);
formData.append("fieldUid", fieldUid);
formData.append("file", file);
await fetchPostFormData("/api/files", formData);
}
async function fetchPostFormData(url, formData) {);
try {
let result = await (
await fetch(url, {
method: "POST",
withCredentials: true,
credentials: "include",
headers: {
Authorization: localStorage.getItem("token"),
},
body: formData,
})
).json();
return result;
} catch (err) {
return err;
}
}
Server
router.post("/api/files", async (req, res, next) => {
try {
console.log("starting upload..."); // <------------------- THIS ONE IS LOGGED
let bb = busboy({
headers: req.headers,
limits: {
fileSize: 20 * 1024 * 1024, // 20 mb
},
});
let fields = {};
// Get any text values
bb.on("field", (fieldname, val, fieldnameTruncated, valTruncated) => {
console.log("on.field", fieldname, val); // <------------------ NOT FIRING
fields[fieldname] = val;
});
bb.on("file", (fieldname, file, filename, encoding, mimetype) => {
console.log("on.file"); // <----------------------------------- NOT FIRING
let parts = filename.filename.split(".");
let name = parts[0];
let extension = parts[parts.length - 1];
let finalName = `${+new Date()}-${name}.${extension}`;
let filePath = `${filesFolderPath}${finalName}`;
// Open writeable stream to path
let writeStream = fs.createWriteStream(filePath);
// Pipe the file to the opened stream
file.pipe(writeStream);
// Check for errors
writeStream.on("error", (err) => {
console.log(err);
});
writeStream.on("close", async (err) => {
let sizeBytes = fs.statSync(filePath).size;
});
});
bb.on("finish", () => {
res.status(200).send({ success: true });
});
} catch (err) {
next(err);
}
});

Answer 1

Managed to solve it.
The problem was the missing req.pipe(bb) at the very end.
// previous code... ^^^^^
bb.on("finish", () => {
res.status(200).send({ success: true });
});
req.pipe(bb) // <------------- THIS SHIT RIGHT HERE
} catch (err) {
next(err);
}
});