Php mySQL Gruppenwechsel Gruppenbruch, bekomme es einfach nicht hin

SET SQL_MODE = "NO_AUTO_VALUE_ON_ZERO";  
SET AUTOCOMMIT = 0;
START TRANSACTION;
SET time_zone = "+00:00";  
/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;
/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;
/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;
/*!40101 SET NAMES utf8mb4 */;
CREATE TABLE `beispieltabelle` (
  `id` int(11) NOT NULL,
  `created` datetime DEFAULT NULL,
  `name` text DEFAULT NULL,
  `text` text DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
INSERT INTO `beispieltabelle` (`id`, `created`, `name`, `text`) VALUES
(1, '2022-01-01 11:08:15', 'Nicole', 'Spülmittel'),  
(2, '2022-01-01 12:34:44', 'Martin', 'Tisch'),  
(3, '2022-01-01 13:00:55', 'Mirko', 'Dose'),  
(4, '2022-01-01 13:01:27', 'Mirko', 'Gürtel'),  
(5, '2022-01-02 07:42:51', 'Mirko', 'Kiste'),  
(6, '2022-01-02 07:59:40', 'Nicole', 'Batterie'),  
(7, '2022-01-02 08:34:54', 'Martin', 'Öl'),  
(8, '2022-01-02 09:39:01', 'Monika', 'Stift'),  
(9, '2022-01-22 06:43:50', 'Mirko', 'Holz'),  
(10, '2022-01-03 08:46:01', 'Jana', 'Käse'),  
(11, '2022-01-03 09:52:09', 'Anja', 'Fenster'),  
(12, '2022-01-03 12:50:44', 'Jutta', 'Schuh'),  
(13, '2022-01-03 13:32:10', 'Hartmut', 'Computer'),  
(14, '2022-01-03 14:44:10', 'Dirk', 'Film'),  
(15, '2022-01-04 07:05:02', 'Birgit', 'Gitarre'),  
(16, '2022-01-04 07:27:20', 'Bernhard', 'Hülle'),  
(17, '2022-01-04 09:05:02', 'Werner', 'Halter'),  
(18, '2022-01-04 11:21:09', 'Bernhard', 'Kleber'),  
(19, '2022-01-05 08:47:08', 'Jennifer', 'Karton'),  
(20, '2022-01-05 09:01:08', 'Armin', 'Auto'),  
(21, '2022-01-05 09:32:07', 'Frank', 'Rolle'),  
(22, '2022-01-05 09:57:16', 'Diane', 'Boot'),  
(23, '2022-01-05 09:59:09', 'Patrick', 'Wohnmobil'),  
(24, '2022-01-05 13:03:44', 'Monika', 'Rolle'),  
(25, '2022-01-06 06:10:02', 'Mirko', 'Atlas'),  
(26, '2022-01-06 07:03:45', 'Hartmut', 'Baum'),  
(27, '2022-01-06 07:05:32', 'Hartmut', 'Schale'),  
(28, '2022-01-06 07:49:16', 'Oliver', 'Sack'),  
(29, '2022-01-06 07:50:51', 'Oliver', 'Eimer'),  
(30, '2022-01-06 09:48:58', 'Martin', 'Säge'),  
(31, '2022-01-06 09:49:47', 'Martin', 'Papier'),  
(32, '2022-01-06 10:08:02', 'Dirk', 'Klammern'),  
(33, '2022-01-06 12:42:21', 'Jutta', 'Gel'),  
(34, '2022-01-07 07:53:07', 'Michael', 'Band'),  
(35, '2022-01-07 08:02:53', 'Werner', 'Blume'),  
(36, '2022-01-07 09:27:10', 'Oliver', 'Wand'),  
(37, '2022-01-08 07:32:04', 'Oliver', 'Haus'),  
(38, '2022-01-08 07:33:11', 'Fabian', 'Text'),  
(39, '2022-01-08 08:04:08', 'Klaus', 'Buch'),  
(40, '2022-01-08 08:39:44', 'Fabian', 'Spiel'),  
(41, '2022-01-08 10:39:09', 'Werner', 'Kugel'),  
(42, '2022-01-09 06:59:27', 'Oliver', 'Farbe'),  
(43, '2022-01-09 06:59:52', 'Oliver', 'Mehl'),  
(44, '2022-01-09 07:00:08', 'Oliver', 'Sand'),  
(45, '2022-01-09 11:05:27', 'Monika', 'Eisen'),  
(46, '2022-01-10 10:45:21', 'Marion', 'Hut'),  
(47, '2022-01-10 10:51:12', 'Birgit', 'Schere'),  
(48, '2022-01-10 11:39:14', 'Werner', 'Hammer'),  
(49, '2022-01-11 06:04:12', 'Klaus', 'Regal'),  
(50, '2022-01-11 06:50:02', 'Nicole', 'Katze');  
ALTER TABLE `beispieltabelle`
  ADD PRIMARY KEY (`id`);
ALTER TABLE `beispieltabelle`
  MODIFY `id` int(11) NOT NULL AUTO_INCREMENT, AUTO_INCREMENT=2168;
COMMIT;
/*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;
/*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */;
/*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;

<?php

$db = mysqli_connect(host, benutzer, passwort, name); 

$sql = 'SELECT id, created, name, text FROM beispieltabelle ORDER BY name ASC, id DESC;' ;  

$erg = $db->query($sql);

$last_entry = null;

while ($row = $erg->fetch_object()) {
	
   if ($last_entry != $row->name) { 

		if ($last_entry != 0) {
			echo '</tbody></table></details>';  
		}
   
        echo '<details><summary>' . $row->name.'</summary>';  
				echo '<table>  
					<thead>
						<tr>
							<th>Datum</th>
							<th>Name</th>
							<th>Text</th>
						</tr>
					</thead>
					<tbody>';  
					
        $last_entry = $row->name;
		
    }

		echo '<tr>  
				<td>'. date('d.m.Y', strtotime($row->created)) . '</td>  
				<td>'. $row->name . '</td>  
				<td>'. $row->text . '</td>  
			</tr>';  

}

echo '</tbody></table></details>';  

?>