Operations to perform: Apply all migrations: admin, app01, auth, contenttypes, sessions Running migrations: No migrations to apply. Your models in app(s): 'app01' have changes that are not yet reflected in a migration, and so won't be applied. Run 'manage.py makemigrations' to make new migrations, and then re-run 'manage.py migrate' to apply them.

这段话是指在 Django 项目中，有一些模型在应用中发生了更改，但是这些更改还没有被反映在迁移中，因此无法应用这些更改。需要运行命令 'manage.py makemigrations' 生成新的迁移文件，然后再运行 'manage.py migrate' 应用这些更改。建议在每次更改模型后都要执行这两个命令，以确保数据库结构与应用程序代码保持同步。