No connection because in target machine is actively refusing it

Question

Here is my code:

from langchain_core.prompts import ChatPromptTemplate
from langchain_ollama import ChatOllama
from langchain_core.output_parsers import StrOutputParser

llm = ChatOllama(
    model = 'llama3.2',
    temperature = 0
)

chat_template = ChatPromptTemplate.from_messages(
    [
        ('system', "you have to give two line definition of the word given by user"),
        ('human', 'the word is {user_input}')
    ]
)

message = chat_template.format_messages(user_input = 'backlog')
llm.invoke(message)
chain = chat_template | llm | StrOutputParser()

chain.invoke({'user_input' : 'backlog'})

And it is showing connect error:

httpx.ConnectError: [WinError 10061] No connection could be made because the target machine actively refused it

How can I fix this? I was trying to create basic word meaning chatbot using langchain.

Answer 1

this means that Ollama is not running on you machine.

after Ollama pull <model name> you need to run Ollama serve