The problem of csv file import in typescript + express

I keep having a problem uploading a csv file. In the request, everything comes in formdata, but when I try to access the file, everything is undefined

This is my written code

Route config
export abstract class RouteConfig {
    app: Application;
    name: string;
    constructor(app: Application, name: string) {
        this.app = app;
        this.name = name;
        this.configureRoutes();
    }

    getName() {
        return this.name;
    }

    abstract configureRoutes(): Application;

import csv routes
const upload = multer({dest: 'tmp/csv'});

export class ProductRoutes extends RouteConfig {
    constructor(app: Application) {
        super(app, "ProductRoutes");
    }

    configureRoutes() {
        this.app.route('/api/products/custom-import')
            .post([JWT.authenticateJWT, ProductController.importProductWithCustomFeed, upload.single('feed')]);
        return this.app;
    }
}

 const fileContents: Any[] = await readFile((req as any).feed.path);
        res.json(fileContents);
controller

Everything seems correct to me, but I don't understand where it comes from. The only problem I see is not from that upload.single through which I indicate the path But I don't know..