diff --git a/LionHeart-iOS/LionHeart-iOS/Application/AppDelegate.swift b/LionHeart-iOS/LionHeart-iOS/Application/AppDelegate.swift
index 50dfea1e..b5f06e5f 100644
--- a/LionHeart-iOS/LionHeart-iOS/Application/AppDelegate.swift
+++ b/LionHeart-iOS/LionHeart-iOS/Application/AppDelegate.swift
@@ -59,7 +59,7 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
 
 extension AppDelegate: MessagingDelegate {
     func messaging(_ messaging: Messaging, didReceiveRegistrationToken fcmToken: String?) {
-        guard let fcmToken else { return }
+//        guard let fcmToken else { return }
         print("✅✅✅✅✅✅✅✅✅✅✅✅✅fcmToken받아오기 성공✅✅✅✅✅✅✅✅✅✅✅✅✅✅")
         print("fcmToken: ", fcmToken)
         
diff --git a/LionHeart-iOS/LionHeart-iOS/Global/UserDefault/UserDefaultToken.swift b/LionHeart-iOS/LionHeart-iOS/Global/UserDefault/UserDefaultToken.swift
index b0267a6c..05161160 100644
--- a/LionHeart-iOS/LionHeart-iOS/Global/UserDefault/UserDefaultToken.swift
+++ b/LionHeart-iOS/LionHeart-iOS/Global/UserDefault/UserDefaultToken.swift
@@ -11,7 +11,7 @@ import Foundation
 struct UserDefaultToken: AppData, Codable {
     var refreshToken: String?
     var accessToken: String?
-    let fcmToken: String
+    let fcmToken: String?
     
     var isExistJWT: Bool {
         return !(self.refreshToken == nil)
diff --git a/LionHeart-iOS/LionHeart-iOS/Network/Services/AuthService.swift b/LionHeart-iOS/LionHeart-iOS/Network/Services/AuthService.swift
index 27b04a40..6d095700 100644
--- a/LionHeart-iOS/LionHeart-iOS/Network/Services/AuthService.swift
+++ b/LionHeart-iOS/LionHeart-iOS/Network/Services/AuthService.swift
@@ -40,7 +40,7 @@ final class AuthService: Serviceable {
     func login(type: LoginType, kakaoToken: String) async throws {
         // 1. UserDefault에서 토큰 가져오기
         guard let fcmToken = UserDefaultsManager.tokenKey?.fcmToken else {
-            throw NetworkError.clientError(code: "", message: UserDefaultsManager.tokenKey)
+            throw NetworkError.clientError(code: "", message: "\(UserDefaultsManager.tokenKey)")
         }
         let loginRequest = LoginRequest(socialType: type.raw, token: kakaoToken, fcmToken: fcmToken)