错误提示：Model class book.models.BookType doesn’t declare an explicit app_label

-错误提示：Model class book.models.BookType doesn’t declare an explicit app_label
问题在设置apps.py 里，属于路径设置问题
错误代码：

class BookConfig(AppConfig):
    name = 'apps.book'
    verbose_name = "图书模块"

应该改为：

class BookConfig(AppConfig):
    name = 'book'
    verbose_name = "图书模块"