Annotated a class with @Configuration and @Controller. Need help in refactoring

Question

Below is my class in which i had to use both @Configuration and @Controller as there should be only one instance of Thymeleaf in the e

Answer 1

Take look at Spring Boot documentation typical layout

Also this article SOLID Programming Principles

And look at Spring Boot guide Spring Boot Thymeleaf (you don't need your @Bean configurations)

In two words you should separate
1. MyThymeleafConfig configuration
2. TemplateController with viewTemplates() and another endpoints