old_contents: 
  from django.db import models
  
  from .book import Book
  from .language import Language
  
  from gdstorage.storage import GoogleDriveStorage
  
  gd_storage = GoogleDriveStorage()
  
  class File(models.Model):
      id = models.AutoField(
           primary_key=True,
           editable=False)
      
      audio = models.FileField(
          blank=True, null=True,
          upload_to = 'audios/', storage = gd_storage)
  
      class Meta:
          verbose_name = 'File'
          db_table = 'believe_file'
          verbose_name_plural = 'Files'
  
new_contents: 
  from django.db import models
  
  from .book import Book
  from .language import Language
  
  from gdstorage.storage import GoogleDriveStorage
  
  gd_storage = GoogleDriveStorage()
  
  class File(models.Model):
      id = models.AutoField(
           primary_key=True,
           editable=False)
      contenido = models.TextField(
          
      )
      
      audio = models.FileField(
          blank=True, null=True,
          upload_to = 'audios/', storage = gd_storage)
  
      class Meta:
          verbose_name = 'File'
          db_table = 'believe_file'
          verbose_name_plural = 'Files'
  
subject: update modelo