angular http post 500 internal server error php crud - php

Question

this is my addproject.php code:
<?php
header("Access-Control-Allow-Origin: *");
header("Access-Control-Allow-Headers: access");
header("Access-Control-Allow-Methods: *");
header("Content-Type: application/json; charset=UTF-8");
header("Access-Control-Allow-Headers: Content-Type, Access-Control-Allow-Headers, Authorization, X-Requested-With");
$method = $_SERVER['REQUEST_METHOD'];
if ($method == "OPTIONS") {
die();
}
if ($_SERVER['REQUEST_METHOD'] !== 'POST') :
http_response_code(405);
echo json_encode([
'success' => 0,
'message' => 'Bad Request!.Only POST method is allowed',
]);
exit;
endif;
require 'connect.php';
$database = new config();
$conn = $database->getConnection();
$data = json_decode(file_get_contents("php://input"));
var_dump($data);
if (!isset($data->id) || !isset($data->description) || !isset($data->name) || !isset($data->start_date) || !isset($data->end_date)) :
echo json_encode([
'success' => 0,
'message' => 'Please enter compulsory fileds | id, description and name',
]);
exit;
elseif (empty(trim($data->id)) || empty(trim($data->description)) || empty(trim($data->name))) :
echo json_encode([
'success' => 0,
'message' => 'Field cannot be empty. Please fill all the fields.',
]);
exit;
endif;
try {
$id = htmlspecialchars(trim($data->id));
$description = htmlspecialchars(trim($data->description));
$start_date = htmlspecialchars(trim($data->start_date));
$end_date = htmlspecialchars(trim($data->end_date));
$name = htmlspecialchars(trim($data->name));
$query = "INSERT INTO `projects`(
id,
description,
start_date,
end_date,
name,
)
VALUES(
:id,
:description,
:start_date,
:end_date,
:name
)";
$stmt = $conn->prepare($query);
$stmt->bindValue(':id', $id, PDO::PARAM_INT);
$stmt->bindValue(':description', $description, PDO::PARAM_STR);
$stmt->bindValue(':start_date', $start_date, PDO::PARAM_STR);
$stmt->bindValue(':end_date', $end_date, PDO::PARAM_STR);
$stmt->bindValue(':name', $name, PDO::PARAM_STR);
if ($stmt->execute()) {
http_response_code(201);
echo json_encode([
'success' => 1,
'message' => 'Data Inserted Successfully.'
]);
exit;
}
echo json_encode([
'success' => 0,
'message' => 'There is some problem in data inserting'
]);
exit;
} catch (PDOException $e) {
http_response_code(500);
echo json_encode([
'success' => 0,
'message' => $e->getMessage()
]);
exit;
}
and this is my angular request POST:
`createProjects(project:any) {
console.log(project);
return this.http.post(this.baseUrl+'addprojects.php', project);
}`
keep in mind the that the delete project and viewprojects works and the angular is sending data but the server is not reading it right i get this error :POST http://localhost/backend/addprojects.php 500 (Internal Server Error)
im trying to send data from a POST REQUEST IN ANGULAR TO MY API THAT I SET UP IN THE SERVICE COMPONONET but there is something wrong with the serveryour text