Deploying Machine Learning Model in Flask to Render

[Rx_Lm]

Hello, I’m having difficulty in deploying my Flask script in Render. this is the code.

model.py
from flask import Flask, request, jsonify
import joblib
import numpy as np

app = Flask(name)

Load the trained model

model = joblib.load(‘SVR_1.joblib’)

@app.route(‘/predict’, methods=[‘POST’])
def predict():
try:
# Get input data from the request
data = request.get_json(force=True)
input_data = np.array(data[‘features’])

    # Reshape the 1D array to a 2D array
    input_data_2d = input_data.reshape(1, -1)

    # Make predictions using the loaded model
    prediction = model.predict(input_data_2d)

    # Return the prediction as JSON
    return jsonify({"prediction": prediction.tolist()})

except Exception as e:
    return jsonify({"error": str(e)})

if name == ‘main’:
app.run(host=‘0.0.0.0’, port=5000)

build.sh:
pip install --upgrade pip
pip install -r requirements.txt

requirements.txt:
Flask
Gunicorn
Numpy
Joblib
sklearn

build command:
./build.sh

start command:
python model.py

i keep having errors like this:

Traceback (most recent call last):

File “/opt/render/project/src/model.py”, line 8, in
model = joblib.load(‘SVR_1.joblib’)
^^^^^^^^^^^^^^^^^^^^^^^^^^^
File “/opt/render/project/src/.venv/lib/python3.11/site-packages/joblib/numpy_pickle.py”, line 658, in load
obj = _unpickle(fobj, filename, mmap_mode)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File “/opt/render/project/src/.venv/lib/python3.11/site-packages/joblib/numpy_pickle.py”, line 577, in _unpickle
obj = unpickler.load()
^^^^^^^^^^^^^^^^
File “/usr/local/lib/python3.11/pickle.py”, line 1213, in load
dispatchkey[0]

File “/usr/local/lib/python3.11/pickle.py”, line 1538, in load_stack_global

self.append(self.find_class(module, name))

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File “/usr/local/lib/python3.11/pickle.py”, line 1580, in find_class
import(module, level=0)
ModuleNotFoundError: No module named ‘sklearn’

thanks in advance!

[al_ps]

Hi,

The main error appears to be:

ModuleNotFoundError: No module named ‘sklearn’

I’m not a Python expert, but searching for that error seems to bring up plenty of resources with the same issue and suggested resolutions.

Maybe you’ve using the old package? https://pypi.org/project/sklearn/

Alan