1. fix bugs

src/main/java/com/supervision/config/WebConfig.java

@@ -1,22 +1,12 @@
 package com.supervision.config;
 
-import com.fasterxml.jackson.databind.DeserializationFeature;
-import com.fasterxml.jackson.databind.ObjectMapper;
-import com.fasterxml.jackson.databind.SerializationFeature;
-import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
-import com.fasterxml.jackson.datatype.jsr310.deser.LocalDateTimeDeserializer;
-import com.fasterxml.jackson.datatype.jsr310.ser.LocalDateTimeSerializer;
-import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
 import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
-
-import java.time.LocalDateTime;
-import java.time.format.DateTimeFormatter;
 import java.util.ArrayList;
 import java.util.List;
 
-//@Configuration
+@Configuration
 public class WebConfig implements WebMvcConfigurer {