how to resolve this : Exception evaluating SpringEL expression: "#authorization.expression('isAuthenticated()')"?

i'm working on simple project that implement spring security. the issue come when i tried to work with Logout link with Spring and Thymeleaf.

1.pom.xml

    <!--Spring Boot Dependencies  - Security -->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-security</artifactId>
    </dependency>

    <!-- Dependencies Spring Security-->
    <dependency>
        <groupId>org.thymeleaf.extras</groupId>
        <artifactId>thymeleaf-extras-springsecurity4</artifactId>
        <version>2.1.2.RELEASE</version>
        <scope>compile</scope>
    </dependency>

navbar.html

<ul class="nav navbar-nav navbar-right">
                <!--<li><a th:href="@{/login}" th:text="#{navbar.login.text}"></a></li>-->
                <li th:if="${#authorization.expression('isAuthenticated()')}">
                    <a th:href="@{/login}" th:text="#{navbar.login.text}"/>
                </li>
                <li th:if="${#authorization.expression('isAuthenticated()')}">
                    <form id="f" th:action="@{/logout}" method="post" role="form" class="navbar-form">
                        <button type="submit" th:text="#{navbar.logout.text}" class="btn btn-primary"/>
                    </form>
                </li>
            </ul>

error scrrenshot: