diff --git a/backend/app/dto/setting.go b/backend/app/dto/setting.go
index 423e84c57..78e0ffef1 100644
--- a/backend/app/dto/setting.go
+++ b/backend/app/dto/setting.go
@@ -149,7 +149,7 @@ type SnapshotInfo struct {
 	DefaultDownload string    `json:"defaultDownload"`
 	Status          string    `json:"status"`
 	Message         string    `json:"message"`
-	CreatedAt       time.Time `json:"createdAt"`
+	CreatedAt       time.Time `json:"created_at"`
 	Version         string    `json:"version"`
 
 	InterruptStep    string `json:"interruptStep"`
diff --git a/backend/app/service/cronjob_backup.go b/backend/app/service/cronjob_backup.go
index c3e2c77df..4ecdefb8a 100644
--- a/backend/app/service/cronjob_backup.go
+++ b/backend/app/service/cronjob_backup.go
@@ -1,6 +1,7 @@
 package service
 
 import (
+	"errors"
 	"fmt"
 	"os"
 	"path"
@@ -30,6 +31,9 @@ func (u *CronjobService) handleApp(cronjob model.Cronjob, startTime time.Time) e
 		if err != nil {
 			return err
 		}
+		if len(appItems) == 0 {
+			return errors.New("no such app in database!")
+		}
 		apps = appItems
 	}
 	accountMap, err := loadClientMap(cronjob.BackupAccounts)
@@ -65,6 +69,9 @@ func (u *CronjobService) handleApp(cronjob model.Cronjob, startTime time.Time) e
 
 func (u *CronjobService) handleWebsite(cronjob model.Cronjob, startTime time.Time) error {
 	webs := loadWebsForJob(cronjob)
+	if len(webs) == 0 {
+		return errors.New("no such website in database!")
+	}
 	accountMap, err := loadClientMap(cronjob.BackupAccounts)
 	if err != nil {
 		return err
@@ -98,6 +105,9 @@ func (u *CronjobService) handleWebsite(cronjob model.Cronjob, startTime time.Tim
 
 func (u *CronjobService) handleDatabase(cronjob model.Cronjob, startTime time.Time) error {
 	dbs := loadDbsForJob(cronjob)
+	if len(dbs) == 0 {
+		return errors.New("no such db in database!")
+	}
 	accountMap, err := loadClientMap(cronjob.BackupAccounts)
 	if err != nil {
 		return err
diff --git a/frontend/src/api/interface/setting.ts b/frontend/src/api/interface/setting.ts
index 1dc0da83c..a85dfe0d2 100644
--- a/frontend/src/api/interface/setting.ts
+++ b/frontend/src/api/interface/setting.ts
@@ -135,7 +135,7 @@ export namespace Setting {
         description: string;
         status: string;
         message: string;
-        createdAt: DateTimeFormats;
+        created_at: DateTimeFormats;
         version: string;
         interruptStep: string;
         recoverStatus: string;
diff --git a/frontend/src/views/setting/snapshot/index.vue b/frontend/src/views/setting/snapshot/index.vue
index ec017cc26..f7e2d16d8 100644
--- a/frontend/src/views/setting/snapshot/index.vue
+++ b/frontend/src/views/setting/snapshot/index.vue
@@ -110,7 +110,7 @@
                         </template>
                     </el-table-column>
                     <el-table-column
-                        prop="createdAt"
+                        prop="created_at"
                         sortable
                         :label="$t('commons.table.date')"
                         :formatter="dateFormat"