fix: QcastException advice 추가

- QcastException 에 메세지 유무에 따라 응답 분기 처리

src/main/java/com/interplug/qcast/config/Exception/GlobalExceptionHandler.java

@@ -3,11 +3,11 @@ package com.interplug.qcast.config.Exception;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.HttpRequestMethodNotSupportedException;
-import org.springframework.web.bind.annotation.ControllerAdvice;
 import org.springframework.web.bind.annotation.ExceptionHandler;
+import org.springframework.web.bind.annotation.RestControllerAdvice;
 
 @Slf4j
-@ControllerAdvice
+@RestControllerAdvice
 public class GlobalExceptionHandler {
   @ExceptionHandler(HttpRequestMethodNotSupportedException.class)
   protected ResponseEntity<ErrorResponse> handle(HttpRequestMethodNotSupportedException e) {
@@ -22,6 +22,16 @@ public class GlobalExceptionHandler {
         .body(ErrorResponse.of(errorCode.getMessage()));
   }
 
+  @ExceptionHandler(QcastException.class)
+  protected ResponseEntity<ErrorResponse> handle(QcastException e) {
+    final ErrorCode errorCode = e.getErrorCode();
+    if (e.getMessage() == null) {
+      return ResponseEntity.status(errorCode.getStatus())
+          .body(ErrorResponse.of(errorCode.getMessage()));
+    }
+    return ResponseEntity.status(errorCode.getStatus()).body(ErrorResponse.of(e.getMessage()));
+  }
+
   @ExceptionHandler(Exception.class)
   protected ResponseEntity<ErrorResponse> handle(Exception e) {
     return ResponseEntity.internalServerError()