Cannot run this in notebook

[ahuang11]

import pathlib

import lumen as lm
import lumen.ai as lmai
import panel as pn

from lumen.sources.duckdb import DuckDBSource

pn.extension("tabulator", "codeeditor", inline=False, template="fast")

llm = lmai.llm.OpenAI()

lmai.memory["current_source"] = DuckDBSource(
    tables={
        "windturbines": "SELECT * from read_parquet('windturbines.parq')",
    },
    uri=":memory",
    initializers=["INSTALL httpfs;", "LOAD httpfs;"],
)

assistant = lmai.Assistant(
    llm=llm,
    agents=[
        lmai.agents.TableAgent,
        lmai.agents.SQLAgent,
        lmai.agents.PipelineAgent,
        lmai.agents.hvPlotAgent,
        lmai.agents.ChatAgent,
    ],
)
assistant.servable("Lumen.ai")
assistant.controls().servable(area="sidebar")