diff --git a/UserFront/pom.xml b/UserFront/pom.xml
index 902ec2b3..87830a4e 100644
--- a/UserFront/pom.xml
+++ b/UserFront/pom.xml
@@ -14,7 +14,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>1.5.4.RELEASE</version>
+		<version>2.7.18</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 
@@ -46,8 +46,8 @@
 		</dependency>
 		
 		<dependency>
-			<groupId>mysql</groupId>
-			<artifactId>mysql-connector-java</artifactId>
+			<groupId>com.mysql</groupId>
+			<artifactId>mysql-connector-j</artifactId>
 		</dependency>
 		
 		<dependency>
diff --git a/UserFront/src/main/java/com/userFront/config/SecurityConfig.java b/UserFront/src/main/java/com/userFront/config/SecurityConfig.java
index 40b10417..3931511f 100644
--- a/UserFront/src/main/java/com/userFront/config/SecurityConfig.java
+++ b/UserFront/src/main/java/com/userFront/config/SecurityConfig.java
@@ -67,8 +67,8 @@ protected void configure(HttpSecurity http) throws Exception {
 
 
 
-    @Autowired
-    public void configureGlobal(AuthenticationManagerBuilder auth) throws Exception {
+    @Override
+    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
 //    	 auth.inMemoryAuthentication().withUser("user").password("password").roles("USER"); //This is in-memory authentication
         auth.userDetailsService(userSecurityService).passwordEncoder(passwordEncoder());
     }
diff --git a/UserFront/src/main/java/com/userFront/service/UserServiceImpl/AppointmentServiceImpl.java b/UserFront/src/main/java/com/userFront/service/UserServiceImpl/AppointmentServiceImpl.java
index 838ad223..0d62b84c 100644
--- a/UserFront/src/main/java/com/userFront/service/UserServiceImpl/AppointmentServiceImpl.java
+++ b/UserFront/src/main/java/com/userFront/service/UserServiceImpl/AppointmentServiceImpl.java
@@ -24,7 +24,7 @@ public List<Appointment> findAll() {
     }
 
     public Appointment findAppointment(Long id) {
-        return appointmentDao.findOne(id);
+        return appointmentDao.findById(id).orElse(null);
     }
 
     public void confirmAppointment(Long id) {
diff --git a/UserFront/src/main/resources/application.properties b/UserFront/src/main/resources/application.properties
index d7e04942..6aef4cbd 100644
--- a/UserFront/src/main/resources/application.properties
+++ b/UserFront/src/main/resources/application.properties
@@ -1,3 +1,10 @@
+# ===============================
+# = SPRING
+# ===============================
+
+# UserServiceImpl and AccountServiceImpl depend on each other
+spring.main.allow-circular-references = true
+
 # ===============================
 # = DATA SOURCE
 # ===============================
@@ -30,6 +37,9 @@ spring.jpa.show-sql = true
 # the project
 spring.jpa.hibernate.ddl-auto = update
 
+# Keep Boot 1.5's IDENTITY mapping for GenerationType.AUTO (no hibernate_sequence)
+spring.jpa.hibernate.use-new-id-generator-mappings = false
+
 # Allows Hibernate to generate SQL optimized for a particular DBMS
 spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.MySQL5Dialect
 
diff --git a/UserFront/src/test/java/com/userFront/UserFrontApplicationTests.java b/UserFront/src/test/java/com/userFront/UserFrontApplicationTests.java
index 81fed97b..3e51f21d 100644
--- a/UserFront/src/test/java/com/userFront/UserFrontApplicationTests.java
+++ b/UserFront/src/test/java/com/userFront/UserFrontApplicationTests.java
@@ -1,11 +1,8 @@
 package com.userFront;
 
-import org.junit.Test;
-import org.junit.runner.RunWith;
+import org.junit.jupiter.api.Test;
 import org.springframework.boot.test.context.SpringBootTest;
-import org.springframework.test.context.junit4.SpringRunner;
 
-@RunWith(SpringRunner.class)
 @SpringBootTest
 public class UserFrontApplicationTests {