When I run my code, nothing happens? Plz help

[CalluMcGregor]

I have trained my model and all the files are where they should be (I think) but when i run my file (below) nothing happens. I get no errors, but i cant use my chatbot or anything.

import random
import json
import pickle
import numpy as np

import nltk
from nltk.stem import WordNetLemmatizer

from tensorflow import keras
from keras.models import load_model

lemmatizer = WordNetLemmatizer()

intents = json.loads(open('intents.json').read())
words = pickle.load(open('words.pkl', 'rb'))
classes = pickle.load(open('classes.pkl', 'rb'))
model = load_model('chatbot_model.h5')

def clean_sentence(sentence):
sentence_words = nltk.word_tokenize(sentence)
sentence_words = [lemmatizer.lemmatize(word) for word in sentence_words]
return(sentence_words)

def word_bag(sentence):
sentence_words = clean_sentence(sentence)
bag = [0] * len(words)
for w in sentence_words:
for i, word in enumerate(words):
if word == w:
bag[i] = 1
return np.array(bag)

def predict_class(sentence):
wb = word_bag(sentence)
result = model.predict(np.array([wb]))[0]
ERROR_THRESHOLD = 0.25
result = [[i, r] for i, r in enumerate(result) if r > ERROR_THRESHOLD]

result.sort(key=lambda x: x[1], reverse=True)
return_list = []
for r in result:
    return_list.append({'intent': classes[r[0]], 'probability': str(r[1])})
return return_list

[NajibNakhla]

hello did you fix this issue ? having the same one