RestApi:TypeErroThe view function did not return a valid response. The function either returned None

TypeErroThe view function did not return a valid response. The function either returned None or ended without a return statement.
           

出現這種情況，根據經驗有兩種問題：

1.沒有加return方法

2.api重名，或者指定的方法可能重RestApi:TypeErroThe名，修改删除就好