RASA FORMS-'NoneType'对象不可迭代

如何解决RASA FORMS-'NoneType'对象不可迭代

我正在创建一个机器人，以帮助用户根据所提供的名称搜索文件，并且我正在使用一个插槽来存储名为“ SEARCHCONTENT”的文件名的内存，并且我正在使用“ SEARCH”实体来帮助漫游器识别搜索词的不同同义词。这是我要搜索文件的nlu数据：

## intent:searchSynonyms
 - [search](SEARCH)
 - [look for](SEARCH)
 - [find](SEARCH)
 - [where is](SEARCH)

## intent:file
- file
- file [bills](SEARCHCONTENT)
- [search](SEARCH) file
- [search](SEARCH) file [mouse](SEARCHCONTENT)
- [search](SEARCH) for a file
- [search](SEARCH) for a file [laptops](SEARCHCONTENT)
- [searching](SEARCH) file
- [searching](SEARCH) file [accounting](SEARCHCONTENT)
- [where is](SEARCH) the file
- [where is](SEARCH) the file [order summary](SEARCHCONTENT) located
- [look for](SEARCH) the file
- [look for](SEARCH) the file [degree planner](SEARCHCONTENT)
- [find](SEARCH) file
- [find](SEARCH) file [design report](SEARCHCONTENT)

在域文件中，我指定了以“文本”作为输入的插槽名称：

slots:
  SEARCHCONTENT:
    type: text
    auto_fill: false

然后我继续创建表单：

from typing import Any,Text,Dict,List

from rasa_sdk import Action,Tracker
from rasa_sdk.executor import CollectingDispatcher
from rasa_sdk.events import SlotSet
from rasa_sdk.forms import FormAction
class FormActionFileSearch(FormAction):
    """Custom form action to find file"""

    def name(self) -> Text:
        return "form_action_file_search"

    @staticmethod
    def required_slots(tracker: "Tracker") -> List[Text]:
        return ["SEARCHCONTENT"]

    def slot_mappings(self) -> Dict[Text,Any]:
        return {"SEARCHCONTENT": self.from_entity(entity="SEARCHCONTENT",intent=["file"])}

    def submit(
        self,dispatcher: "CollectingDispatcher",tracker: "Tracker",domain: Dict[Text,Any],) -> List[Dict]:
        search_content = tracker.get_slot("SEARCHCONTENT")
        dispatcher.utter_message("Searching file " + search_content)

现在，我要做的就是打印文件名，以检查文件名是否正确地从插槽中提取了值。
然后，我进入domain.yml文件以添加表单操作名称：

forms:
  - form_action_file_search

然后我继续在config.yml文件中添加表单策略：

policies:
 - name: FormPolicy

然后我继续为文件名搜索创建故事：

## file path affirm
* file{"SEARCHCONTENT":"car budget"}
- form_action_file_search
- form{"name": "form_action_file_search"}
- form{"name": null}
- utter_assistance
* affirm
- utter_askAssistance

然后将所有意图和操作添加到domain.yml文件中，这就是它的外观：

intents:
- file
- affirm
entities:
- SEARCH
- SEARCHCONTENT
slots:
  SEARCHCONTENT:
    type: text
    auto_fill: false
forms:
  - form_action_file_search
responses:
  utter_assistance:
  - text: Is there anything else you need?
  utter_askAssistance:
  - text: How can I help you?
actions:
- utter_assistance
- utter_askAssistance

运行机器人并输入“搜索文件帐户摘要”作为输入时，出现以下错误：

解决方法

您可以尝试将插槽类型更改为未功能化吗？

slots:
  SEARCHCONTENT:
    type: unfeaturized
    auto_fill: false