fixed building issues

app.py

@@ -26,14 +26,15 @@ import redis
 from flask_session import Session
 
 app = Flask(__name__)
-# Configure Redis for session storage
-app.config['SESSION_TYPE'] = 'redis'
-app.config['SESSION_REDIS'] = redis.from_url(os.getenv('REDIS_URL', 'redis://localhost:6379'))
-app.config['SESSION_KEY_PREFIX'] = 'patent_explorer:'
+# Use filesystem session instead of Redis
+app.config['SESSION_TYPE'] = 'filesystem'
 app.config['PERMANENT_SESSION_LIFETIME'] = timedelta(minutes=30)
 app.secret_key = os.getenv('FLASK_SECRET_KEY') or os.urandom(24)
 
-# Initialize Flask-Session
+# Create sessions directory if it doesn't exist
+if not os.path.exists('flask_session'):
+    os.makedirs('flask_session')
+
 Session(app)
 
 # Get API keys from environment variables

requirements.txt

@@ -1,7 +1,5 @@
 # filepath: c:\Users\Phyllis\PatentExplorerApp\requirements.txt
-flask>=2.0.0
-flask-session>=0.5.0
-redis>=4.0.0
+flask==2.0.3
 Werkzeug==2.0.3
 python-dotenv==0.19.0
 requests==2.26.0
@@ -11,5 +9,5 @@ pandas==2.0.3
 umap-learn==0.5.3
 plotly==5.3.1
 scikit-learn==1.3.0
-hdbscan
+hdbscan==0.8.40
 reportlab==4.0.4