Btukfyl

I'm trying to deploy a Python Flask application on AWS Bean stalk. I have decent experience in python but totally new to deployments. I've been getting an error which says " url took too long to respond HTTP 504 ". My environment's health is totally fine and all my deployments to the instance doesn't indicate any errors, yet I seem to be getting this 504 issue

Error looks like this:

Error 504

Error Log looks like this:
Error Log

Access Log:
Access Logs

Here's my code:

from flask import Flask, request

  from flask_restful import Resource, Api



  import firebase_admin



  # For connecting to firestore database and authentication

from firebase_admin import credentials, firestore



 # For Cross-Origin Http requests

 from flask_cors import CORS, cross_origin



 # For Data base Connectivity

 from firebase_admin import db



 from flask import jsonify



  application = app = Flask(__name__)

  api = Api(app)





 CORS(app)



 class Firebase_Data(Resource):



     def get(self):



         return self._getData()



        def _getData(self):



         # Setting up credentials to connect

    cred = credentials.Certificate(****)



    # Setting up secure connection to firestore Real time database



        Kokomo_app = firebase_admin.initialize_app(cred, {

        'projectId' : '****'

       })





      # Connecting to the firestore client

    db_ref = firestore.client()



      # Referring to a section of the data

    ref_inc = db_ref.collection(****)



      # Fetching all the records under that particular section and converting 

       them to list of dictionaries

    docs = list( ref_inc.get() )







     lat_long = 



     for doc in docs:



        data = doc.to_dict()



        lat_long.append(



              { 'Latitude:' : data['latitude'], 'Longitude' : 

              data['longitude'] } )





       return lat_long





    api.add_resource(Firebase_Data, '/Firebase_Data') # Route_1



   if __name__ == '__main__':

      app.run()   

My requirements file:

aniso8601==4.0.1



CacheControl==0.12.5



cachetools==3.0.0



certifi==2018.10.15



chardet==3.0.4



Click==7.0



firebase-admin==2.13.0



Flask==1.0.2



Flask-Cors==3.0.7



Flask-RESTful==0.3.6



google-api-core==1.5.2



google-auth==1.6.1



google-cloud-core==0.28.1



google-cloud-firestore==0.30.0



google-cloud-storage==1.13.0



google-resumable-media==0.3.1



googleapis-common-protos==1.5.5



grpcio==1.16.1



idna==2.7



itsdangerous==1.1.0



Jinja2==2.10



MarkupSafe==1.1.0



msgpack==0.5.6



protobuf==3.6.1



pyasn1==0.4.4



pyasn1-modules==0.2.2



pytz==2018.7



requests==2.20.1



rsa==4.0



six==1.11.0



urllib3==1.24.1



Werkzeug==0.14.1

I've checked my logs , every dependency package in my requirements file seems to have installed properly without any issues, I'm using apache library and also installed latest mod_wsgi package.... I followed some AWS resources and increased the load balancers' timeout but it didn't fix the issue

I've seen many Stack overflow questions related to these, but didn't seem to find a complete or a concrete answer.I'm creating this question in-spite of that is because I have very few attempts left to deploy in my free tier, so I want to make them count. I highly appreciate your time and efforts in advance.

note: Please ignore the indentations in this code. I manipulated the spacing badly to fit inside the code block.

Thanks