fixed models.py

enricosuplico_music/homepage/models.py

 from django.db import models
 
 class Artist(models.Model):
-    artist_name = models.CharField(max_length = 50, unique = True)
+    artist_name = models.CharField(max_length = 50, unique = True, default = "")
     monthly_listners = models.IntegerField
-    birth_name = models.CharField(max_length = 50, unique = True)
+    birth_name = models.CharField(max_length = 50, unique = True, default = "")
     bio = models.TextField(max_length = 700, default = "no default")
 
 class Album(models.Model):
-    album_name = models.CharField(max_length = 50, unique = True)
+    album_name = models.CharField(max_length = 50, unique = True, default = "")
     artist = models.ForeignKey(Artist, on_delete = models.CASCADE)
     description = models.TextField(max_length = 500)
     release_date = models.CharField(max_length = 50)
@@ -15,7 +15,7 @@ class Album(models.Model):
     song_count = models.IntegerField
 
 class Song(models.Model):
-    song_title = models.CharField(max_length = 50, unique = True)
+    song_title = models.CharField(max_length = 50, unique = True, default = "")
     artist = models.ForeignKey(Artist, on_delete = models.CASCADE) 
     album = models.ForeignKey(Album, on_delete = models.CASCADE) 
     song_length = models.IntegerField