Fix bugs caused by Expense/Income controllers

src/main/java/com/faf223/expensetrackerfaf/service/ExpenseService.java

@@ -2,16 +2,16 @@ package com.faf223.expensetrackerfaf.service;
 
 import com.faf223.expensetrackerfaf.model.Expense;
 import com.faf223.expensetrackerfaf.repository.ExpenseRepository;
-import org.springframework.beans.factory.annotation.Autowired;
+import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Service;
 
 import java.util.List;
 
 @Service
+@RequiredArgsConstructor
 public class ExpenseService {
 
-    @Autowired
-    private ExpenseRepository expenseRepository;
+    private final ExpenseRepository expenseRepository;
 
     public List<Expense> getExpensesByUserId(String userUuid) {
         return expenseRepository.findByUserUserUuid(userUuid);