What is HTTP 405 Error? (Method Not Allowed)

import requests

response = requests.get("https://httpbin.dev/get")
# post plain/text data
response = requests.post("https://httpbin.dev/post", data="my data")
# or application/json
response = requests.post("https://httpbin.dev/post", json={"name": "my query"})
response = requests.delete("https://httpbin.dev/delete")
response = requests.head("https://httpbin.dev/head")
print(response.text)

async function makeRequests() {
    // GET request
    let response = await fetch("https://httpbin.dev/get");
    let data = await response.text();
    console.log(data);

    // POST request with plain text data
    response = await fetch("https://httpbin.dev/post", {
        method: "POST",
        headers: {
            "Content-Type": "text/plain"
        },
        body: "my data"
    });
    data = await response.text();
    console.log(data);

    // POST request with JSON data
    response = await fetch("https://httpbin.dev/post", {
        method: "POST",
        headers: {
            "Content-Type": "application/json"
        },
        body: JSON.stringify({ name: "my query" })
    });
    data = await response.text();
    console.log(data);

    // DELETE request
    response = await fetch("https://httpbin.dev/delete", {
        method: "DELETE"
    });
    data = await response.text();
    console.log(data);

    // HEAD request
    response = await fetch("https://httpbin.dev/head", {
        method: "HEAD"
    });
    console.log("HEAD request status:", response.status);
}

makeRequests();

<?php

require 'vendor/autoload.php'; // Make sure Guzzle is installed via Composer

use GuzzleHttp\Client;

$client = new Client();

try {
    // GET request
    $response = $client->request('GET', 'https://httpbin.dev/get');
    echo $response->getBody();

    // POST request with plain text data
    $response = $client->request('POST', 'https://httpbin.dev/post', [
        'body' => 'my data',
        'headers' => ['Content-Type' => 'text/plain']
    ]);
    echo $response->getBody();

    // POST request with JSON data
    $response = $client->request('POST', 'https://httpbin.dev/post', [
        'json' => ['name' => 'my query']
    ]);
    echo $response->getBody();

    // DELETE request
    $response = $client->request('DELETE', 'https://httpbin.dev/delete');
    echo $response->getBody();

    // HEAD request
    $response = $client->request('HEAD', 'https://httpbin.dev/head');
    echo "HEAD request status: " . $response->getStatusCode();
} catch (\Exception $e) {
    echo "Error: " . $e->getMessage();
}

?>

require 'typhoeus'
require 'json'

# GET request
response = Typhoeus.get("https://httpbin.dev/get")
puts response.body

# POST request with plain text data
response = Typhoeus.post("https://httpbin.dev/post", body: "my data", headers: { "Content-Type" => "text/plain" })
puts response.body

# POST request with JSON data
response = Typhoeus.post("https://httpbin.dev/post", body: { name: "my query" }.to_json, headers: { "Content-Type" => "application/json" })
puts response.body

# DELETE request
response = Typhoeus.delete("https://httpbin.dev/delete")
puts response.body

# HEAD request
response = Typhoeus.head("https://httpbin.dev/head")
puts "HEAD request status: #{response.code}"

package main

import (
	"bytes"
	"encoding/json"
	"fmt"
	"io/ioutil"
	"net/http"
)

func main() {
	// GET request
	resp, err := http.Get("https://httpbin.dev/get")
	if err != nil {
		fmt.Println("Error:", err)
		return
	}
	defer resp.Body.Close()
	body, _ := ioutil.ReadAll(resp.Body)
	fmt.Println(string(body))

	// POST request with plain text data
	resp, err = http.Post("https://httpbin.dev/post", "text/plain", bytes.NewBuffer([]byte("my data")))
	if err != nil {
		fmt.Println("Error:", err)
		return
	}
	defer resp.Body.Close()
	body, _ = ioutil.ReadAll(resp.Body)
	fmt.Println(string(body))

	// POST request with JSON data
	jsonData := map[string]string{"name": "my query"}
	jsonValue, _ := json.Marshal(jsonData)
	resp, err = http.Post("https://httpbin.dev/post", "application/json", bytes.NewBuffer(jsonValue))
	if err != nil {
		fmt.Println("Error:", err)
		return
	}
	defer resp.Body.Close()
	body, _ = ioutil.ReadAll(resp.Body)
	fmt.Println(string(body))

	// DELETE request
	client := &http.Client{}
	req, err := http.NewRequest("DELETE", "https://httpbin.dev/delete", nil)
	if err != nil {
		fmt.Println("Error:", err)
		return
	}
	resp, err = client.Do(req)
	if err != nil {
		fmt.Println("Error:", err)
		return
	}
	defer resp.Body.Close()
	body, _ = ioutil.ReadAll(resp.Body)
	fmt.Println(string(body))

	// HEAD request
	req, err = http.NewRequest("HEAD", "https://httpbin.dev/head", nil)
	if err != nil {
		fmt.Println("Error:", err)
		return
	}
	resp, err = client.Do(req)
	if err != nil {
		fmt.Println("Error:", err)
		return
	}
	defer resp.Body.Close()
	fmt.Println("HEAD request status:", resp.Status)
}

use reqwest::blocking::{Client};
use std::collections::HashMap;

fn main() -> Result<(), Box<dyn std::error::Error>> {
    let client = Client::new();

    // GET request
    let res = client.get("https://httpbin.dev/get").send()?;
    println!("{}", res.text()?);

    // POST request with plain text data
    let res = client.post("https://httpbin.dev/post")
        .body("my data")
        .header("Content-Type", "text/plain")
        .send()?;
    println!("{}", res.text()?);

    // POST request with JSON data
    let mut json_data = HashMap::new();
    json_data.insert("name", "my query");
    let res = client.post("https://httpbin.dev/post")
        .json(&json_data)
        .send()?;
    println!("{}", res.text()?);

    // DELETE request
    let res = client.delete("https://httpbin.dev/delete").send()?;
    println!("{}", res.text()?);

    // HEAD request
    let res = client.head("https://httpbin.dev/head").send()?;
    println!("HEAD request status: {}", res.status());

    Ok(())
}