diff --git a/README.md b/README.md
index 78fd7e6..d485524 100644
--- a/README.md
+++ b/README.md
@@ -1070,10 +1070,13 @@ func main() {
 		},
 	})
 	if err != nil {
-		log.Fatalf("could not greet: %v", err)
+		log.Println("could not greet: ", err)
+	}
+
+	if r != nil {
+		log.Printf("Success: %t\n", r.Success)
+		log.Printf("Count: %d\n", r.Counts)
 	}
-	log.Printf("Success: %t\n", r.Success)
-	log.Printf("Count: %d\n", r.Counts)
 }
 ```
 
@@ -1172,10 +1175,13 @@ func main() {
 		},
 	})
 	if err != nil {
-		log.Fatalf("could not greet: %v", err)
+		log.Println("could not greet: ", err)
+	}
+
+	if r != nil {
+		log.Printf("Success: %t\n", r.Success)
+		log.Printf("Count: %d\n", r.Counts)
 	}
-	log.Printf("Success: %t\n", r.Success)
-	log.Printf("Count: %d\n", r.Counts)
 }
 ```
 
diff --git a/notify/notification_apns.go b/notify/notification_apns.go
index 96e53f2..5b6c5d3 100644
--- a/notify/notification_apns.go
+++ b/notify/notification_apns.go
@@ -457,5 +457,5 @@ Retry:
 		goto Retry
 	}
 
-	return
+	return resp, nil
 }
diff --git a/notify/notification_apns_test.go b/notify/notification_apns_test.go
index 21b4a61..a69a587 100644
--- a/notify/notification_apns_test.go
+++ b/notify/notification_apns_test.go
@@ -58,7 +58,7 @@ func TestIOSNotificationStructure(t *testing.T) {
 	test := "test"
 	expectBadge := 0
 	message := "Welcome notification Server"
-	expiration := int64(time.Now().Unix())
+	expiration := time.Now().Unix()
 	req := &PushNotification{
 		ApnsID:     test,
 		Topic:      test,
diff --git a/notify/notification_fcm.go b/notify/notification_fcm.go
index 501e593..03423bc 100644
--- a/notify/notification_fcm.go
+++ b/notify/notification_fcm.go
@@ -228,7 +228,7 @@ Retry:
 		goto Retry
 	}
 
-	return
+	return resp, nil
 }
 
 func logPush(cfg *config.ConfYaml, status, token string, req *PushNotification, err error) logx.LogPushEntry {
diff --git a/notify/notification_hms.go b/notify/notification_hms.go
index f183686..12cf80a 100644
--- a/notify/notification_hms.go
+++ b/notify/notification_hms.go
@@ -227,5 +227,5 @@ Retry:
 		goto Retry
 	}
 
-	return
+	return resp, nil
 }
diff --git a/router/server.go b/router/server.go
index bd3529d..b988d74 100644
--- a/router/server.go
+++ b/router/server.go
@@ -30,14 +30,7 @@ import (
 	"golang.org/x/crypto/acme/autocert"
 )
 
-var (
-	isTerm bool
-	doOnce sync.Once
-)
-
-func init() {
-	isTerm = isatty.IsTerminal(os.Stdout.Fd())
-}
+var doOnce sync.Once
 
 func abortWithError(c *gin.Context, code int, message string) {
 	c.AbortWithStatusJSON(code, gin.H{
@@ -179,6 +172,7 @@ func routerEngine(cfg *config.ConfYaml, q *queue.Queue) *gin.Engine {
 
 	log.Logger = zerolog.New(os.Stdout).With().Timestamp().Logger()
 
+	isTerm := isatty.IsTerminal(os.Stdout.Fd())
 	if isTerm {
 		log.Logger = log.Output(
 			zerolog.ConsoleWriter{
diff --git a/router/server_test.go b/router/server_test.go
index aae869d..d0c68f4 100644
--- a/router/server_test.go
+++ b/router/server_test.go
@@ -54,12 +54,13 @@ func TestMain(m *testing.M) {
 		queue.WithWorkerCount(4),
 	)
 	q.Start()
+
+	code := m.Run()
 	defer func() {
 		q.Shutdown()
 		q.Wait()
+		os.Exit(code)
 	}()
-
-	os.Exit(m.Run())
 }
 
 func initTest() *config.ConfYaml {
diff --git a/rpc/example/go/send/main.go b/rpc/example/go/send/main.go
index 9ead8ed..8cf2995 100644
--- a/rpc/example/go/send/main.go
+++ b/rpc/example/go/send/main.go
@@ -50,8 +50,11 @@ func main() {
 		},
 	})
 	if err != nil {
-		log.Fatalf("could not greet: %v", err)
+		log.Println("could not greet: ", err)
+	}
+
+	if r != nil {
+		log.Printf("Success: %t\n", r.Success)
+		log.Printf("Count: %d\n", r.Counts)
 	}
-	log.Printf("Success: %t\n", r.Success)
-	log.Printf("Count: %d\n", r.Counts)
 }