Delete Method in Swagger mit SQLite3 und NodeJS - node.js

Question

I have OPENAPI, which are build with Swagger. GET und POST methods works finei. but not DELETE.
index.ts
`
app.use("/deleteProduct/{id}", deleteProduct);
delete.ts
import { Router } from "express";
import { Database } from "sqlite3";
import database from "./databaseConnection";
const deleteProduct = Router()
function removeProduct(id: string, db: Database) {
console.log(id);
return new Promise((resolve, reject) => {
db.serialize(() => {
db.run(`DELETE FROM product WHERE product_id = ?`, id, (err) => {
if (err) {
reject (err);
}
resolve ("Success");
})
})
})
}
deleteProduct.delete("/:id", async (req, res) => {
try {
res.json(await removeProduct(req.params.id, database));
} catch (err) {
console.error(`Error removing the product`, err.message);
}
});
export default deleteProduct
`
after pressing "execute" button nothing happens..
Can someone please help me or give a hint, where a mistake can lie.
Here is a swagger.json. May there is something wrong
"/deleteProduct/{id}": {
"delete": {
"tags": ["Delete"],
"description": "Removes product from database",
"produces": "application/json",
"parameters": [
{
"in": "path",
"name": "id",
"description": "Id of the product",
"required": true,
"schema": {
"type": "integer"
}
}],
"responses": {
"200": {
"description": "Product was deleted",
"content": {
"application/json": {
"schema": {
"type": "array"
}