Не работает navbar, а точнее при переходе на другую страницу выдает 400 ошибку. В чем может быть проблема?
<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org" xmlns:pth="http://www.w3.org/1999/html">
<head>
<meta charset="UTF-8">
<title>Get Qr Code</title>
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-EVSTQN3/azprG1Anm3QDgpJLIm9Nao0Yz1ztcQTwFspd3yD65VohhpuuCOmLASjC" crossorigin="anonymous">
<script src="https://cdn.jsdelivr.net/npm/@popperjs/core@2.9.2/dist/umd/popper.min.js" integrity="sha384-IQsoLXl5PILFhosVNubq5LC7Qb9DXgDA9i+tQ8Zj3iwWAwPtgFTxbJ8NT4GN1R8p" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/js/bootstrap.min.js" integrity="sha384-cVKIPhGWiC2Al4u+LWgxfKTRIcfu0JTxR+EQDz/bgldoEyl4H0zUF0QKbrJ0EcQF" crossorigin="anonymous"></script>
<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.0/css/bootstrap.min.css" rel="stylesheet"
integrity="sha384-9aIt2nRpC12Uk9gS9baDl411NQApFmC26EwAOH8WgZl5MYYxFfc+NcPb1dKGj7Sk" crossorigin="anonymous">
</head>
<body>
<header>
<nav class="navbar navbar-expand-lg navbar-light bg-light">
<div class="collapse navbar-collapse" id="navbarNavDropdown">
<ul class="navbar-nav">
<li class="nav-item active">
<a class="nav-link" href="main.html">QR<span class="sr-only">(current)</span></a>
</li>
<li class="nav-item">
<a class="nav-link" href="import-page.html">Загурзить файл</a>
</li>
</ul>
</div>
</nav>
</header>
<div align="center" style="margin-top: 50px">
<div class="w-25 m-2">
<form th:action="@{/get}" th:object="${qrCode}" >
<input type="text" class="form-control mb-2" th:name="inn" placeholder="Введите ИНН" aria-label="Введите ИНН" aria-describedby="basic-addon2">
<div class="input-group-append">
<button type="submit" class="btn btn-outline-secondary">Получить QR</button>
</div>
</form>
<p th:if="${error}" th:text="${error}" style="color: red;font-weight: bold"></p>
<table class="table table-bordered" th:if="${qrCode!=null}" style="margin-top: 40px;" >
<thead class="thead-light">
<tr >
<div style="align-items: center;display: flex; justify-content: center;">
<th class="text-center" scope="col">Наименование</th>
<th class="text-center" scope ="col">QR</th>
</div>
</tr>
</thead>
<tbody class="table-body">
<tr th:block th:each="qr : ${qrCode}" >
<td class="align-middle"><p th:text="${qr.name}"></p></td>
<td><a th:download="${qr.name.isEmpty()} ? ${inn} : (${qr.name.equals('-')} ? ${inn} : ${qr.name} )" th:href="@{'data:image/png;base64,'+${qr.qrImage}}"><img th:attr="src=@{'data:image/png;base64,'+${qr.qrImage}}" width="300" height="300"/></a></td>
</tr>
</tbody>
</table>
</div>
</div>
</body>
</html>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Import excel</title>
</head>
<body>
<header>
<nav class="navbar navbar-expand-lg navbar-light bg-light">
<div class="collapse navbar-collapse" id="navbarNavDropdown">
<ul class="navbar-nav">
<li class="nav-item active">
<a class="nav-link" href="main.html">QR<span class="sr-only">(current)</span></a>
</li>
<li class="nav-item">
<a class="nav-link" href="import-page.html">Загурзить файл</a>
</li>
</ul>
</div>
</nav>
</header>
<div align="center" class="mainPage" style="margin-top: 50px" id="txn_result">
<form th:action="@{/import}" method="post" enctype="multipart/form-data">
<div class="mb-3">
<label for="formFile" class="form-label" > <b>Введите EXCEL файл</b></label>
<input class="form-control" type="file" id="formFile" name="rbs_file">
</div>
<p style="text-align: center ; color: red"><b>Выберите тип файла</b></p>
<select name="type" id="type">
<option value="choice">Выбрать</option>
<option value="EMPLOYEE">Сотрудник</option>
<option value="PARTNER">Партнер</option>
</select>
<input type="submit" value="import" class="ui-button"/>
</form>
<!-- <div th:if="${FormatError}" style="text-align: center ; color: red">У выводимых файлов неверное разширения! </div>-->
</div>
</body>
</html>