ClassNotFoundException: javax.faces.webapp.FacesServlet | Java: Laboratório com Testes, JSF e Design Patterns II

Segui todo o passo a passo da video aula e me deparei com esse erro no momento que executei o servidor:

GRAVE: Servlet [Faces Servlet] in web application [/Argentum] threw load() exception
java.lang.ClassNotFoundException: javax.faces.webapp.FacesServlet
    at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1358)
    at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1180)
    at org.apache.catalina.core.DefaultInstanceManager.loadClass(DefaultInstanceManager.java:546)
    at org.apache.catalina.core.DefaultInstanceManager.loadClassMaybePrivileged(DefaultInstanceManager.java:527)
    at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:150)
    at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1044)
    at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:985)
    at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4885)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5199)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1412)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1402)
    at java.util.concurrent.FutureTask.run(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)

Confirma se no seu pom.xml tem as dependências:

    <dependencies>
        <dependency>
            <groupId>com.thoughtworks.xstream</groupId>
            <artifactId>xstream</artifactId>
            <version>1.4.9</version>
        </dependency>
        <!-- outras dependencias -->
        <dependency>
            <groupId>com.sun.faces</groupId>
            <artifactId>jsf-api</artifactId>
            <version>2.2.13</version>
        </dependency>
        <dependency>
            <groupId>com.sun.faces</groupId>
            <artifactId>jsf-impl</artifactId>
            <version>2.2.13</version>
        </dependency>
        <dependency>
            <groupId>org.primefaces</groupId>
            <artifactId>primefaces</artifactId>
            <version>6.0</version>
        </dependency>

    </dependencies>

Se não der certo, tenta pegar o projeto configurado por esse link: https://s3.amazonaws.com/caelum-online-public/laboratorio-java2/projeto-configurado.zip

Mergulhe em programação