Spring Boot: spring-cloud-starter-openfeign library is not working

Just adding the `spring-cloud-starter-openfeign` dependency breaks the Spring Boot application after deploying it to AWS.

Error log:
```
Error creating bean with name 'userRepository' defined in io.test.package defined in @EnableJpaRepositories declared on MainApplication: Cannot create inner bean '(inner bean)#710726a3' of type
[org.springframework.orm.jpa.SharedEntityManagerCreator] while setting bean property 'entityManager';

nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name '(inner bean)#710726a3':

Cannot resolve reference to bean 'entityManagerFactory' while setting constructor argument;

nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'entityManagerFactory' available
```

No file or test is identified. Start by reproducing the AWS deployment with the spring-cloud-starter-openfeign dependency and trace the startup log from userRepository to the missing entityManagerFactory; done means the application deploys without the bean-creation failure.

Written by the indexing model from the issue text.