spring-boot-tomcat-LegacyCookieProcessor.java

 @Bean
        public WebServerFactoryCustomizer<TomcatServletWebServerFactory> webServerFactoryCustomizer() {
            return new WebServerFactoryCustomizer<TomcatServletWebServerFactory>() {
                @Override
                public void customize(TomcatServletWebServerFactory factory) {
                    TomcatServletWebServerFactory tomcat = (TomcatServletWebServerFactory) factory;
                    tomcat.addContextCustomizers(context -> context.setCookieProcessor(new LegacyCookieProcessor()));
                }
            };
        }

Thank you bro.