diff --git a/apps/jumpserver/settings/base.py b/apps/jumpserver/settings/base.py
index 0ce5e9da3..71c641e71 100644
--- a/apps/jumpserver/settings/base.py
+++ b/apps/jumpserver/settings/base.py
@@ -35,7 +35,7 @@ def parse_sentinels_host(sentinels_host):
 VERSION = const.VERSION
 BASE_DIR = const.BASE_DIR
 PROJECT_DIR = const.PROJECT_DIR
-APP_DIR = os.path.join(PROJECT_DIR, 'apps')
+APPS_DIR = os.path.join(PROJECT_DIR, 'apps')
 DATA_DIR = os.path.join(PROJECT_DIR, 'data')
 ANSIBLE_DIR = os.path.join(DATA_DIR, 'ansible')
 CERTS_DIR = os.path.join(DATA_DIR, 'certs')
diff --git a/apps/terminal/api/applet/applet.py b/apps/terminal/api/applet/applet.py
index b30b33f36..fddf90ad1 100644
--- a/apps/terminal/api/applet/applet.py
+++ b/apps/terminal/api/applet/applet.py
@@ -78,6 +78,7 @@ class DownloadUploadMixin:
         with open(zip_path, 'rb') as f:
             response = HttpResponse(f.read(), status=200, content_type='application/octet-stream')
             response['Content-Disposition'] = 'attachment; filename*=UTF-8\'\'{}.zip'.format(instance.name)
+        os.unlink(zip_path)
         return response
 
 
diff --git a/apps/terminal/serializers/session.py b/apps/terminal/serializers/session.py
index 517262e0f..184262ec4 100644
--- a/apps/terminal/serializers/session.py
+++ b/apps/terminal/serializers/session.py
@@ -22,7 +22,7 @@ class SessionType(models.TextChoices):
 class SessionSerializer(BulkOrgResourceModelSerializer):
     org_id = serializers.CharField(allow_blank=True)
     protocol = serializers.ChoiceField(choices=Protocol.choices, label=_("Protocol"))
-    type = LabeledChoiceField(choices=SessionType.choices, label=_("Type"))
+    type = LabeledChoiceField(choices=SessionType.choices, label=_("Type"), default=SessionType.normal)
 
     class Meta:
         model = Session