Send KnexJS error message to the frontend - node.js

Question

I am having trouble sending an error to the front end when a csv file is uploaded and the numbers already exist in the database. The backend is logging an error that the primary key value already exist, but the code I have written tells the front end that the file uploaded just fine.
Code snippet:
router.post('/:program/upload', upload.single('testUpload'), (req, res, next) => {
try {
CSVtoPSQL(req.params.program, req.file.filename)
return res.status(201).json({
message: 'File Uploaded Just fine :)'
});
} catch (error) {
return res.status(500).json({
message: error
})
}
});
const CSVtoPSQL = (program, filePath) => {
let stream = fs.createReadStream(path.resolve(__dirname, '../files', filePath));
let csvData = [];
let csvStream = csv
.parse({ headers: false })
.on('error', error => console.error(error))
.on('data', (data) => {
csvData.push(data.toString());
})
.on('end', () => {
csvData.forEach(item => {
queries.upload(program, item)
.then(() => {
console.log('QR Code Added: ' + item);
}).catch((err) => {
console.log(`oopsie: ${err}`);
});
})
});
stream.pipe(csvStream);
}
Pretty confident the issue is with my poor understanding of promises.

Answer 1

As expected, I wasn't handling my promises correctly. I've updated the code a bit and now it responds with 2 arrays of successful uploads and errored uploads.
router.post('/:program/upload', upload.single('testUpload'), async (req, res, next) => {
try {
const result = await CSVtoPSQL(req.params.program, req.file.filename)
return res.status(201).json(result);
}
catch (error) {
return res.status(500).json({
message: error,
})
}
});
const CSVtoPSQL = (program, filePath) => {
let stream = fs.createReadStream(path.resolve(__dirname, '../files', filePath));
let csvData = [];
return new Promise((resolve) => {
const results = {
seccess: [],
error: [],
}
let csvStream = csv
.parse({ headers: false })
.on('error', error => console.error(error))
.on('data', (data) => {
csvData.push(data.toString());
})
.on('end', async () => {
await Promise.all(
csvData.map(async (item) => {
try{
await queries.upload(program, item);
results.success.push(item);
console.log('QR Code Added: ' + item);
}
catch (error) {
console.log(`oopsie: ${error}`)
results.error.push(item);
}
})
)
resolve(results);
});
stream.pipe(csvStream);
})
}