Update app.py

app.py

@@ -47,8 +47,10 @@ from services.evaluation import evaluate_answer # Imported, models loaded here
 
 @app.route("/")
 def home():
-    # This line should now work as mongo.db is correctly initialized to assessment_db
-    tests = list(mongo.db.tests.find({}, {"_id": 0})) 
+    # This line uses the explicit client connection (mongo.cx) and database name (DB_NAME)
+    # to avoid the 'AttributeError: NoneType' object has no attribute 'tests' crash.
+    global DB_NAME 
+    tests = list(mongo.cx[DB_NAME].tests.find({}, {"_id": 0})) 
     return render_template("home.html", tests=tests)
 
 if __name__ == "__main__":