Fix bugs caused by Expense/Income controllers

src/main/java/com/faf223/expensetrackerfaf/controller/IncomeController.java

@@ -2,7 +2,7 @@ package com.faf223.expensetrackerfaf.controller;
 
 import com.faf223.expensetrackerfaf.model.Income;
 import com.faf223.expensetrackerfaf.service.IncomeService;
-import org.springframework.beans.factory.annotation.Autowired;
+import lombok.RequiredArgsConstructor;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.PathVariable;
@@ -13,9 +13,10 @@ import java.util.List;
 
 @RestController
 @RequestMapping("/incomes")
+@RequiredArgsConstructor
 public class IncomeController {
-    @Autowired
-    private IncomeService incomeService;
+
+    private final IncomeService incomeService;
 
     @GetMapping("/user/{userUuid}")
     public ResponseEntity<List<Income>> getIncomesByUser(@PathVariable String userUuid) {