BaseController required a single bean.but 2were found

This error occurs when there are multiple beans of the same type defined in the Spring application context and Spring is not able to determine which bean to inject into the controller.

To fix this error, you can use one of the following approaches:

1. Use the @Qualifier annotation to specify the exact name of the bean that you want to inject:

   @Autowired
   @Qualifier("beanName")
   private SomeBean someBean;

2. Rename one of the beans so that they have unique names:

   @Bean(name = "beanName1")
   public SomeBean someBean1() {
       return new SomeBean();
   }
   
   @Bean(name = "beanName2")
   public SomeBean someBean2() {
       return new SomeBean();
   }

3. Use the @Primary annotation to indicate the default bean to be used when multiple beans of the same type are present:

   @Bean
   @Primary
   public SomeBean someBean1() {
       return new SomeBean();
   }
   
   @Bean
   public SomeBean someBean2() {
       return new SomeBean();
   }

Choose the appropriate approach based on your use case and application requirements.