Modified theme field in Application

api/models.py

@@ -5,7 +5,7 @@ from django.utils import timezone
 class Application(models.Model):
     application_no = models.CharField(max_length=250)
     name = models.CharField(max_length=200, unique=True)
-    theme = models.IntegerField(default=1)
+    theme = models.IntegerField(null=True, blank=True, default=1)
     code = models.CharField(max_length=300)
     created_at = models.DateTimeField(auto_now_add=True)
     updated_at = models.DateTimeField(auto_now=True)