Heroku - 当我运行＆＃39; heroku运行python manage.py migrate＆＃39;我收到一个错误

Question

当我尝试通过运行上述错误将项目迁移到heroku时，我得到以下内容：

C:\Users\{MyUser}\Desktop\My Site\mysite>heroku run python manage.py migrate
Running python manage.py migrate on ? {project name}... !
 !    Cannot run one-off process at this time. Please try again later.

C:\Users\{MyUser}\Desktop\My Site\mysite>heroku run python manage.py makemigrations
Running python manage.py makemigrations on ? {project name}... !
 !    Cannot run one-off process at this time. Please try again later.

我已经尝试过“makemigrations＆＃39;同样。

这是一个错误吗？在我的结尾或Heroku的？