CSS do bootstrap não está aplicando

A página está funcionando normalmente, porém o CSS não está sendo aplicado, segue o das paginas e classe de configuração para localizar resources.

<c:url value="/resources/css" var=“cssPath” />

@EnableWebMvc
@ComponentScan(basePackageClasses = { ChamadosController.class, ProdutoDao.class })
@EnableCaching
public class AppWebConfiguration extends WebMvcConfigurerAdapter {

@Bean
public InternalResourceViewResolver internalResourceViewResolve() {
	InternalResourceViewResolver resolve = new InternalResourceViewResolver();
	resolve.setPrefix("/WEB-INF/views/");
	resolve.setSuffix(".jsp");

	// resolver.setExposeContextBeansAsAttributes(true); poder pegar
	// qualquer variavel
	resolve.setExposedContextBeanNames("carrinhoCompras");
	return resolve;

}

@Bean
public MessageSource messageSource() {

	ReloadableResourceBundleMessageSource messageSource = new ReloadableResourceBundleMessageSource();

	messageSource.setBasename("/WEB-INF/messages");
	messageSource.setDefaultEncoding("UTF-8");
	messageSource.setCacheSeconds(1);

	return messageSource;

}

@Bean
public FormattingConversionService mvcConversionService() {
	DefaultFormattingConversionService conversionService = new DefaultFormattingConversionService();
	DateFormatterRegistrar registra = new DateFormatterRegistrar();
	registra.setFormatter(new DateFormatter("dd/MM/yyyy"));
	registra.registerFormatters(conversionService);

	return conversionService;

}

@Bean
public MultipartResolver multipartResolver() {
	return new StandardServletMultipartResolver();
}

@Override
public void addResourceHandlers(ResourceHandlerRegistry registry) {
	registry.addResourceHandler("/resources/**").addResourceLocations("/resources/");
}

@Bean
public RestTemplate restTemplate() {
	return new RestTemplate();
}

@Bean
public CacheManager cacheManager() {
	CacheBuilder<Object, Object> builder = CacheBuilder.newBuilder().maximumSize(100).expireAfterAccess(1,
			TimeUnit.MINUTES);
	GuavaCacheManager manager = new GuavaCacheManager();
	manager.setCacheBuilder(builder);
	return manager;
}

// @Bean
// public ViewResolver
// contentNegotiationViewResolver(ContentNegotiationManager manager) {
// List<ViewResolver> viewResolvers = new ArrayList<>();
// viewResolvers.add(internalResourceViewResolve());
// viewResolvers.add(new JsonViewResolver());
// ContentNegotiatingViewResolver resolver = new
// ContentNegotiatingViewResolver();
// resolver.setViewResolvers(viewResolvers);
// resolver.setContentNegotiationManager(manager);
// return resolver;
// }

@Override
public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
	configurer.enable();
}