localhost showing {"detail":"Not Found"}

[Dheemant6]

(E:\Phishr-API-main\venv) PS E:\Phishr-API-main> python app.py
Loading the model...
E:\Phishr-API-main\venv\lib\site-packages\sklearn\base.py:376: InconsistentVersionWarning: Trying to unpickle estimator LabelEncoder from version 1.2.2 when using version 1.4.1.post1. This might lead to breaking code or invalid results. Use at your own risk. For more info please refer to:
https://scikit-learn.org/stable/model_persistence.html#security-maintainability-limitations
warnings.warn(
INFO: Started server process [25192]
INFO: Waiting for application startup.
INFO: Application startup complete.
INFO: Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
INFO: 127.0.0.1:52845 - "GET / HTTP/1.1" 404 Not Found
INFO: 127.0.0.1:52845 - "GET / HTTP/1.1" 404 Not Found

I am getting this error when i start hosting. anyone help me in this.

def get_similar_urls(data: DomainData):

# convert to dictionary
data = data.dict()

# the key has same name as you put in class
url = data["url"]
max_num = data["max_num"]

if (max_num <= 0):
    max_num = 20

# result
output = getTypoSquattedDomains(url, max_num)
print("API OUTPUT : ", output)
output = {"output": output}

# Convert the output dictionary to JSON-compatible format
output_dict = json.loads(json.dumps(output, default=str))
return output_dict

and in vscode, this line data = data.dict() is not working. says depricated