TypeError ：（值|| []）。map不是函数redux形式

Question

我在redux-form中使用FieldArray，但与此同时，当我要编辑表单TypeError: (value || []).map is not a function时，它给我错误。有人可以帮我解决这个问题。我是Redux表单的新手，请帮助我，我真的需要尽快解决此问题。我将附加我的代码，请检查它，当我要编辑表单时会发生此错误。

预先感谢

代码

 renderMembers = ({
    fields,
    meta: { error, submitFailed },
    fieldType,
    fieldDisabled,
  }) => (
    <div>
      {fields.map((item, index) => (
        <div key={index} className="row mt-2 mb-3">
          <div className="col-sm-3">
            <Field
              name={`${item}.fieldName`}
              type="text"
              component={renderField}
              label="Label Name"
            />
          </div>
          <div className="col-sm-2">
            <Field
              name={`${item}.fieldType`}
              onChange={(value) => {
                const newItems = [...this.state.fieldType];
                newItems[index] = value.value;

                this.setState((prevState) => ({
                  fieldType: newItems,
                  fieldDisabled: false,
                  fieldIndex: {
                    ...this.state.fieldIndex,
                    fieldIndex: item,
                  },
                }));
              }}
              type="text"
              component={customFieldChooice}
              label="Last Name"
            />
          </div>

          {fieldType[index] === "text" &&
          `optional_fields[${index}]` === item ? (
            <div className="col-sm-5">
              <Field
                name={`${item}.value`}
                type="text"
                component={renderField}
                label="Label Name"
                customValue={true}
              />
            </div>
          ) : fieldType[index] === "dropdown" &&
            `optional_fields[${index}]` === item ? (
            <div className="col-sm-5">
              <Field
                name={`${item}.value`}
                type="text"
                component={customDropdown}
                label="Label Name"
              />
            </div>
          ) : (
            <div className="col-sm-5">
              <Field
                name={`${item}.disableValue`}
                type="text"
                component={renderField}
                customValue={fieldDisabled}
                label="Label Name"
              />
            </div>
          )}

          <button
            className="removeButton"
            type="button"
            title="Remove Field"
            onClick={() => {
              fields.remove(index);
              const list = this.state.fieldType;
              list.splice(index, 1);
              this.setState({
                fieldType: list,
              });
            }}
          />
        </div>
      ))}
      <div className="row">
        <div className="col-sm-2">
          <button
            type="button"
            onClick={() => {
              fields.length <= 9 && fields.push({});
              this.setState({
                fieldDisabled: true,
              });
            }}
            className="addMoreButton"
          >
            Add Custom Field
          </button>
          {submitFailed && error && <span>{error}</span>}
        </div>
      </div>
    </div>
  );