Django postgre迁移错误

我将数据库后端从sqlite3更改为postgre . 当我尝试运行迁移时出现错误

MacBook-Pro-Oleg:avtofarm okorablev$ python3 manage.py migrate

要执行的操作：同步未迁移的应用程序：消息，avtofarm，smart_selects，staticfiles，thumbnail应用所有迁移：contenttypes，admin，callboard，auth，sessions同步应用程序而不迁移：创建表...运行延迟SQL ...安装自定义SQL . ..运行迁移：渲染模型状态... DONE应用callboard.0004_auto_20150701_1609 ... Traceback（最近一次调用最后一次）：文件“/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site- packages / django / db / backends / utils.py“，第64行，执行返回self.cursor.execute（sql，params）psycopg2.ProgrammingError：列”manufdate“无法自动转换为输入日期提示：指定USING表达式执行转换 .

上述异常是以下异常的直接原因：

Traceback（最近一次调用最后一次）：文件“manage.py”，第10行，在execute_from_command_line（sys.argv）文件“/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages /django/core/management/init.py“，第338行，在execute_from_command_line utility.execute（）文件”/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/django/core /management/init.py“，第330行，执行self.fetch_command（子命令）.run_from_argv（self.argv）文件”/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages /django/core/management/base.py“，第393行，在run_from_argv self.execute（* args，** cmd_options）文件”/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site -packages / django / core / management / base.py“，第444行，执行输出= self.handle（* args，** options）文件”/Library/Frameworks/Python.framework/Versions/3.4/lib/python3 .4 / site-packages / django / core / management / commands / migrate.py“，第221行，在handle executor.migrate中（目标） ，plan，fake = fake，fake_initial = fake_initial）文件“/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/django/db/migrations/executor.py”，第110行，在迁移self.apply_migration（状态[migration]，migration，fake = fake，fake_initial = fake_initial）文件“/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/django/db/ migrations / executor.py“，第148行，在apply_migration state = migration.apply（state，schema_editor）文件”/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/django/db /migrations/migration.py“，第115行，在apply operation.database_forwards（self.app_label，schema_editor，old_state，project_state）文件”/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site- packages / django / db / migrations / operations / fields.py“，第201行，在database_forwards schema_editor.alter_field（from_model，from_field，to_field）文件”/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4 /站点包/ djan go / db / backends / base / schema.py“，第484行，在alter_field old_db_params，new_db_params，strict）文件”/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/django /db/backends/base/schema.py“，第636行，_alter_field params，文件”/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/django/db/backends/ base / schema.py“，第111行，执行cursor.execute（sql，params）文件”/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/django/db/backends /utils.py“，第79行，在execute return super（CursorDebugWrapper，self）.execute（sql，params）File”/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/ django / db / backends / utils.py“，第64行，执行返回self.cursor.execute（sql，params）文件”/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site- packages / django / db / utils.py“，第97行，在exit.6.reraise（dj_exc_type，dj_exc_value，traceback）文件”/Library/Frameworks/Python.framework /Versions/3.4/lib/python3.4/site-packages/django/utils/six.py“，第658行，重新提升value.with_traceback（tb）文件”/Library/Frameworks/Python.framework/Versions/3.4 /lib/python3.4/site-packages/django/db/backends/utils.py“，第64行，执行返回self.cursor.execute（sql，params）django.db.utils.ProgrammingError：column”manufdate“无法自动转换为输入日期提示：指定USING表达式以执行转换 .

模型

class Zip(models.Model):
category = models.ForeignKey(Category,null=True,verbose_name='Категория')
subcategory = ChainedForeignKey(SubCategory,chained_field="category",
    chained_model_field="category",
    show_all=False,
    auto_choose=True,verbose_name='Подкатегория')
type = models.ForeignKey(Type,verbose_name='Состояние')
zipgroup = models.ForeignKey(ZipGroup,null=True,verbose_name='Группа запчастей')
ziptype = models.ForeignKey(ZipType,null=True,verbose_name='Вид запчасти')
cartype = models.ForeignKey(CarType,null=True,verbose_name='Тип авто')
carmodel = models.ForeignKey(CarModel,null=True,verbose_name='Модель транспорта')
carbodytype = models.ForeignKey(CarBodyType,null=True,verbose_name='Тип кузова')
catalognumber = models.CharField(max_length=100,null=True,blank=True,verbose_name='Номер по каталогу')
manufdate = models.CharField(max_length=4,null=True,verbose_name='Год выпуска')
title = models.CharField(max_length=100,verbose_name='Заголовок объявления')
description = models.TextField(null=True,verbose_name='Описание')
price = models.IntegerField(verbose_name='Цена')
user = models.ForeignKey(User,verbose_name='Пользователь')
creation_date = models.DateTimeField('date published')
is_sell = models.BooleanField(default=False)
is_active = models.BooleanField(default=True)
likes = models.IntegerField(default=0)