В слой exceptions добавлен GeneralExceptionsHanler.java - класс отвечающий за обработку исключений и их корректое предсавление

src/main/java/com/example/onomatopoeiaback/exceptions/ExceptionDTO.java

@@ -0,0 +1,13 @@
+package com.example.onomatopoeiaback.exceptions;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.Setter;
+
+@AllArgsConstructor
+@Getter
+@Setter
+public class ExceptionDTO {
+    private String status;
+    private String message;
+}

src/main/java/com/example/onomatopoeiaback/exceptions/GeneralExceptionsHandler.java

@@ -0,0 +1,24 @@
+package com.example.onomatopoeiaback.exceptions;
+
+import org.springframework.http.HttpStatus;
+import org.springframework.web.bind.annotation.ControllerAdvice;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+import org.springframework.web.bind.annotation.ResponseBody;
+import org.springframework.web.bind.annotation.ResponseStatus;
+
+@ControllerAdvice
+public class GeneralExceptionsHandler {
+    @ResponseStatus(HttpStatus.BAD_REQUEST)
+    @ExceptionHandler(BadRequestException.class)
+    @ResponseBody
+    public ExceptionDTO handleBadRequestException(BadRequestException e) {
+        return new ExceptionDTO("BAD_REQUEST", e.getMessage());
+    }
+
+    @ResponseStatus(HttpStatus.UNAUTHORIZED)
+    @ExceptionHandler(UnauthorizedException.class)
+    @ResponseBody
+    public ExceptionDTO handleUnauthorizedException(UnauthorizedException e) {
+        return new ExceptionDTO("UNAUTHORIZED", e.getMessage());
+    }
+}

src/main/java/com/example/onomatopoeiaback/repository/EmployeeRepository.java

@@ -1,5 +1,6 @@
 package com.example.onomatopoeiaback.repository;
 
+import com.example.onomatopoeiaback.domain.employee.Employee;
 import org.springframework.data.jpa.repository.JpaRepository;
 import org.springframework.stereotype.Repository;
 

src/main/java/com/example/onomatopoeiaback/repository/QrCodeRepository.java

@@ -0,0 +1,7 @@
+package com.example.onomatopoeiaback.repository;
+
+import com.example.onomatopoeiaback.domain.qrcode.QrCode;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+public interface QrCodeRepository extends JpaRepository<QrCode, Long> {
+}