Problem receiving the request and processing it in Node.js

[ZigglerPL]

Hello, what is the most common reason that sending a request to the specified POST path does not reach the server when the get request is served first and then the one that does not reach the server, i.e. post?

The browser does not block CORS requests because I have added the "cors" dependency: "^2.8.5" in the environment.

I don't have any errors in the console or in the server logs.
`let express = require("express"),
app = express(),
portApp = (process.env.PORT || 3000),
fetch = require("node-fetch"),
path = require("path"),
cors = require("cors"),
webSocket = require("socket.io");
app.listen(portApp, function () {
console.log("Web starting...");
});

app.use(cors());

app.use(express.static("node-rest", {
setHeaders: function (response, path, stat) {
if (path.endsWith(".js")) {
response.set("Content-Type", "application/javascript");
}
}
}));

app.post("/test", function (request, response) {
response.end();
});

app.get("/test", function (request, response) {
    response.send("test done");
});

fetch("http://127.0.0.1:3000/test", {
    method: "POST",
    headers: {
        "Content-Type": "application/json"
    },
    body: JSON.stringify({testData: ""})
}).then(function (response) {
    console.log(response.text());
});`