Why do I get null URL errors when accessing swagger on tomcat? How to fix it?

Question

Java

Hello. We develop webrest apion java. We use springit sping bootfor auto-configuration and local launch of applications. We also use swaggerit to work with our REST APIs. Deploy it in Apache Tomcat 9.0.x.
Library versions (from pom.xml):

<properties>
         <springframework.boot>2.1.2.RELEASE</springframework.boot>
        <springframework.version>5.1.4.RELEASE</springframework.version>

        <swagger.version>2.9.2</swagger.version>
        <java.version>11</java.version>

        <tomcat.version>9.0.14</tomcat.version>
        <postgresql.jdbc.version>42.2.5</postgresql.jdbc.version>

      </properties>

There used to be one application, now it has been divided into three. Errors are of this type:

[ERROR] 2019-08-01 10:07:48.791 [http-nio-8080-exec-7] RestExceptionHandler - No handler found for GET /my-project-rest/api/v1/null/swagger-resources/configuration/security

org.springframework.web.servlet.NoHandlerFoundException: No handler found for GET /my-project/api/v1/null/swagger-resources/configuration/security

  at org.springframework.web.servlet.DispatcherServlet.noHandlerFound(DispatcherServlet.java:1252) [spring-webmvc-5.1.4.RELEASE.jar:5.1.4.RELEASE]

So far, I temporarily solved it with a kind of crutch solution ( бинin the main configuration):

@Bean
    public WebMvcConfigurer webMvcConfigurer() {
        return new WebMvcConfigurer() {

            //every controller without @DateTimeFormat
            @Override
            public void addFormatters(FormatterRegistry registry) {
                registry.addConverter(new LocalDateConverter(DATE_FORMAT_RU));
                registry.addConverter(new LocalDateTimeConverter(DATE_TIME_FORMAT_RU));
            }

            //Enable mappingJackson2HttpMessageConverter
            @Override
            public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
                converters.add(stringConverter());
                converters.add(mappingJackson2HttpMessageConverter());
            }

            //Enable matrix variable
            @Override
            public void configurePathMatch(PathMatchConfigurer configurer) {
                UrlPathHelper pathHelper = new UrlPathHelper();
                pathHelper.setRemoveSemicolonContent(false);
                configurer.setUrlPathHelper(pathHelper);
            }

            @Override
            public void addResourceHandlers(ResourceHandlerRegistry registry) {
                registry.addResourceHandler("swagger-ui.html")
                        .addResourceLocations("classpath:/META-INF/resources/swagger-ui.html");

                registry.addResourceHandler("/webjars/**")
                        .addResourceLocations("classpath:/META-INF/resources/webjars/");

                registry.addResourceHandler("/null/swagger-resources/**") // !!!!!
                        .addResourceLocations("classpath:/META-INF/resources/");

/*
                registry.addResourceHandler("swagger-ui.html")
                        .addResourceLocations("classpath:/META-INF/resources/");
                registry.addResourceHandler("/webjars/**")
                        .addResourceLocations("classpath:/META-INF/resources/webjars/");
*/
            }
        };
    }

Exclamation points in the comment marked the code that I added. It used to be like commented out below in this method.
PS I saw information on the network on such a problem, but there were problems at the launch through the spring boot, but here when starting in the tomcat, such errors appear.