我曾经在笔记本电脑上运行我的网站，其数据库是Sqlite，最近我想将其转移到DigitalOcean，并将其数据库更改为Postgresql，但是当我迁移时，遇到了一些问题。
我的模特
class Profil_Eleve(models.Model):
user = models.OneToOneField(User, on_delete=models.CASCADE)
statut = models.CharField(max_length=250)
telephone = models.CharField(max_length=250, default="Neant")
niveau = models.CharField(max_length=250)
ecole = models.CharField(max_length=250, default="Neant")
adresse = models.CharField(max_length=250, default="Neant")
eleve_or_etudiant = models.CharField(max_length=250, default="eleve")
Exception:
Traceback (most recent call last):
File "./manage.py", line 15, in <module>
execute_from_command_line(sys.argv)
File "/home/abdoulaye/schoollife/venv/lib/python3.6/site-packages/django/core/management/__init__.py", line 381, in execute_from_command_line
utility.execute()
File "/home/abdoulaye/schoollife/venv/lib/python3.6/site-packages/django/core/management/__init__.py", line 375, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/home/abdoulaye/schoollife/venv/lib/python3.6/site-packages/django/core/management/base.py", line 323, in run_from_argv
self.execute(*args, **cmd_options)
File "/home/abdoulaye/schoollife/venv/lib/python3.6/site-packages/django/core/management/base.py", line 364, in execute
output = self.handle(*args, **options)
File "/home/abdoulaye/schoollife/venv/lib/python3.6/site-packages/django/core/management/base.py", line 83, in wrapped
res = handle_func(*args, **kwargs)
File "/home/abdoulaye/schoollife/venv/lib/python3.6/site-packages/django/core/management/commands/migrate.py", line 234, in handle
fake_initial=fake_initial,
File "/home/abdoulaye/schoollife/venv/lib/python3.6/site-packages/django/db/migrations/executor.py", line 117, in migrate
state = self._migrate_all_forwards(state, plan, full_plan, fake=fake, fake_initial=fake_initial)
File "/home/abdoulaye/schoollife/venv/lib/python3.6/site-packages/django/db/migrations/executor.py", line 147, in _migrate_all_forwards
state = self.apply_migration(state, migration, fake=fake, fake_initial=fake_initial)
File "/home/abdoulaye/schoollife/venv/lib/python3.6/site-packages/django/db/migrations/executor.py", line 245, in apply_migration
state = migration.apply(state, schema_editor)
File "/home/abdoulaye/schoollife/venv/lib/python3.6/site-packages/django/db/migrations/migration.py", line 124, in apply
operation.database_forwards(self.app_label, schema_editor, old_state, project_state)
File "/home/abdoulaye/schoollife/venv/lib/python3.6/site-packages/django/db/migrations/operations/fields.py", line 112, in database_forwards
field,
File "/home/abdoulaye/schoollife/venv/lib/python3.6/site-packages/django/db/backends/base/schema.py", line 447, in add_field
self.execute(sql, params)
File "/home/abdoulaye/schoollife/venv/lib/python3.6/site-packages/django/db/backends/base/schema.py", line 137, in execute
cursor.execute(sql, params)
File "/home/abdoulaye/schoollife/venv/lib/python3.6/site-packages/django/db/backends/utils.py", line 99, in execute
return super().execute(sql, params)
File "/home/abdoulaye/schoollife/venv/lib/python3.6/site-packages/django/db/backends/utils.py", line 67, in execute
return self._execute_with_wrappers(sql, params, many=False, executor=self._execute)
File "/home/abdoulaye/schoollife/venv/lib/python3.6/site-packages/django/db/backends/utils.py", line 76, in _execute_with_wrappers
return executor(sql, params, many, context)
File "/home/abdoulaye/schoollife/venv/lib/python3.6/site-packages/django/db/backends/utils.py", line 84, in _execute
return self.cursor.execute(sql, params)
File "/home/abdoulaye/schoollife/venv/lib/python3.6/site-packages/django/db/utils.py", line 89, in __exit__
raise dj_exc_value.with_traceback(traceback) from exc_value
File "/home/abdoulaye/schoollife/venv/lib/python3.6/site-packages/django/db/backends/utils.py", line 84, in _execute
return self.cursor.execute(sql, params)
django.db.utils.ProgrammingError: multiple default values specified for column "id" of table "eleve_profil_eleve"
我不知道该怎么办