fix create playlist

apps/core/admin.py

@@ -41,7 +41,9 @@ class PlayListAdmin(admin.ModelAdmin):
     inlines = [TagInline]
 
     def get_inlines(self, request, obj):
-        return self.inlines if obj.type == models.DYNAMIC else []
+        if obj and obj.type == models.DYNAMIC:
+            return [TagInline]
+        return []
 
 
 class CategoryAdmin(admin.ModelAdmin):