OpenAI Assistant.thread.messages / File Search not working

I have followed the OpenAI Assistant file search documentation very closely according to this link: https://platform.openai.com/docs/assistants/tools/file-search?context=without-streaming

This is how a glimpse of how my code looks like:

Create a vector store for resumes

    vector_store = client.beta.vector_stores.create(name="Resumes")
     
    # Ready the files for upload to OpenAI
    file_paths = [file_path]
    file_streams = [open(path, "rb") for path in file_paths]
     
    # Use the upload and poll SDK helper to upload the files, add them to the vector store,
    # and poll the status of the file batch for completion.
    file_batch = client.beta.vector_stores.file_batches.upload_and_poll(
      vector_store_id=vector_store.id, files=file_streams
    )
     
    # You can print the status and the file counts of the batch to see the result of this operation.
    print(file_batch.status)
    print(file_batch.file_counts)

    # Updates assistant 
    client.beta.assistants.update(
        assistant_id=assistant.id,
        tool_resources={"file_search": {"vector_store_ids": [vector_store.id]}},
    )

    # Upload the user provided file to OpenAI
    message_file = client.files.create(
      file=open(file_path, "rb"), purpose="assistants"
    )

    # Create a thread and attach the file to the message (Thread no.of msgs = 1)
    thread = client.beta.threads.create(
        messages=[
            {
                "role": "user",
                "content": "Convert the content of the resume into JSON format with relevant headers.",
                "attachments": [
                    {"file_id": message_file.id, "tools": [{"type": "file_search"}]}
                ],
            }
        ]
    )

    # Poll for the thread run
    run = client.beta.threads.runs.create_and_poll(
        thread_id=thread.id, assistant_id=assistant.id
    )

    # Retrieve the messages from the run
    messages = list(client.beta.threads.messages.list(thread_id=thread.id, run_id=run.id))

    if not messages:
                raise ValueError("No messages returned from the assistant")
    
            if not messages[0].content:
                raise ValueError("No content in the first message returned from the assistant")
    
            if not messages[0].content[0].text:
                raise ValueError("No text content in the first message content")

    message_content = messages[0].content[0].text
    print(message_content)

    assistant_response = message_content.value

But it seems to continually say this:
An error occurred during file processing: No messages returned from the assistant
Traceback (most recent call last):
File “C:\Users\tooth\OneDrive - Temasek Polytechnic\TP Y3S1N2\Major Project\Codes\op.py”, line 172, in extract_data_from_file
raise ValueError(“No messages returned from the assistant”)
ValueError: No messages returned from the assistant

It was working 5-6hrs ago and even yesterday but now it seems there is a problem with the file search tool. Am I tripping?

try this:

import time

###########################################

while not file_batch.status == 'completed':
    time.sleep(1)#wait one second

###########################################

while not run.status == 'completed':
    time.sleep(1)