Process.hierarchical hit pydantic error

[limyang51]

from typing import List
from crewai import Agent, Crew, Process, Task
from crewai.project import CrewBase, agent, crew, task
from langchain_openai import ChatOpenAI

# Uncomment the following line to use an example of a custom tool
# from marketing_posts.tools.custom_tool import MyCustomTool

# Check our tools documentations for more information on how to use them
from crewai_tools import SerperDevTool, ScrapeWebsiteTool
from pydantic import BaseModel, Field

llm = ChatOpenAI(temperature=0, model="gpt-3.5-turbo")

class MarketStrategy(BaseModel):
    """Market strategy model"""
    name: str = Field(..., description="Name of the market strategy")
    tatics: List[str] = Field(..., description="List of tactics to be used in the market strategy")
    channels: List[str] = Field(..., description="List of channels to be used in the market strategy")
    KPIs: List[str] = Field(..., description="List of KPIs to be used in the market strategy")

class CampaignIdea(BaseModel):
    """Campaign idea model"""
    name: str = Field(..., description="Name of the campaign idea")
    description: str = Field(..., description="Description of the campaign idea")
    audience: str = Field(..., description="Audience of the campaign idea")
    channel: str = Field(..., description="Channel of the campaign idea")

class Copy(BaseModel):
    """Copy model"""
    title: str = Field(..., description="Title of the copy")
    body: str = Field(..., description="Body of the copy")

@CrewBase
class MarketingPostsCrew():
    """MarketingPosts crew"""
    agents_config = 'config/agents.yaml'
    tasks_config = 'config/tasks.yaml'

    @agent
    def lead_market_analyst(self) -> Agent:
        return Agent(
            config=self.agents_config['lead_market_analyst'],
            tools=[SerperDevTool(), ScrapeWebsiteTool()],
            verbose=True,
            memory=False,
        )

    @agent
    def chief_marketing_strategist(self) -> Agent:
        return Agent(
            config=self.agents_config['chief_marketing_strategist'],
            tools=[SerperDevTool(), ScrapeWebsiteTool()],
            verbose=True,
            memory=False,
        )

    @agent
    def creative_content_creator(self) -> Agent:
        return Agent(
            config=self.agents_config['creative_content_creator'],
            verbose=True,
            memory=False,
        )

    @task
    def research_task(self) -> Task:
        return Task(
            config=self.tasks_config['research_task'],
            agent=self.lead_market_analyst()
        )

    @task
    def project_understanding_task(self) -> Task:
        return Task(
            config=self.tasks_config['project_understanding_task'],
            agent=self.chief_marketing_strategist()
        )

    @task
    def marketing_strategy_task(self) -> Task:
        return Task(
            config=self.tasks_config['marketing_strategy_task'],
            agent=self.chief_marketing_strategist(),
            human_input=True,
            # output_json=MarketStrategy
        )

    @task
    def campaign_idea_task(self) -> Task:
        return Task(
            config=self.tasks_config['campaign_idea_task'],
            agent=self.creative_content_creator(),
        # output_json=CampaignIdea
        )

    @task
    def copy_creation_task(self) -> Task:
        return Task(
            config=self.tasks_config['copy_creation_task'],
            agent=self.creative_content_creator(),
        context=[self.marketing_strategy_task(), self.campaign_idea_task()],
            # output_json=Copy
        )

    @crew
    def crew(self) -> Crew:
        """Creates the MarketingPosts crew"""
        return Crew(
            agents=self.agents, # Automatically created by the @agent decorator
            tasks=self.tasks, # Automatically created by the @task decorator
            manager_llm=llm,
            process=Process.hierarchical,
            verbose=2,
            # process=Process.hierarchical, # In case you wanna use that instead https://docs.crewai.com/how-to/Hierarchical/
        )

Try to run some testing on Process.hierarchical, but hit with the pydantic error below. Not really sure what is happening, need some advise which part was wrong?

[lorenzejay]

taking a look