[Python] Why am I not able to create the react agent using create_react_agent()?

What am I doing wrong here ?

import streamlit as st
from langchain_groq import ChatGroq
from langchain_community.tools import DuckDuckGoSearchRun
from langchain.agents import AgentExecutor, create_react_agent
from langchain_community.callbacks.streamlit import StreamlitCallbackHandler
from langchain import hub
import os
from dotenv import load_dotenv
load_dotenv()

os.environ['GROQ_API_KEY'] = os.getenv("GROQ_API_KEY")

search=DuckDuckGoSearchRun(name="Search")
prompt=hub.pull("hwchase17/react")


st.title(" LangChain - Chat with search")


if "messages" not in st.session_state:
st.session_state["messages"]=[
{"role":"assisstant","content":"Hi,I'm a chatbot who can search the web. How can I help you?"}
]

for msg in st.session_state.messages:
st.chat_message(msg["role"]).write(msg['content'])

if prompt:=st.chat_input(placeholder="What is machine learning?"):
st.session_state.messages.append({"role":"user","content"rompt})
st.chat_message("user").write(prompt)

model=ChatGroq(model_name="Llama3-8b-8192",streaming=True)
tools=[search]
agent = create_react_agent(model, tools, prompt)

search_agent = AgentExecutor(agent=agent, tools=tools)

with st.chat_message("assistant"):
st_cb=StreamlitCallbackHandler(st.container(),expand_new_thoughts=False)
response=search_agent.invoke(st.session_state.messages,callbacks=[st_cb])
st.session_state.messages.append({'role':'assistant',"content":response})
st.write(response)


The error is

AttributeError: 'str' object has no attribute 'input_variables'
File "/path/to/langchain/agents/react/agent.py", line 114, in create_react_agent

prompt.input_variables + list(prompt.partial_variables)


I was trying to create a simple Agent made through create_react_agent

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