Fix errors when retrieving statistics by handling empty results

Update the get_stats function in main.py to safely fetch and process counts from the database, preventing potential errors when no records are found for total logs, recent logs, detections, blocked IPs, and active routers.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: 7a657272-55ba-4a79-9a2e-f1ed9bc7a528
Replit-Commit-Checkpoint-Type: full_checkpoint
Replit-Commit-Event-Id: 853b2085-c74d-4b3d-adeb-9db4276a24aa
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/449cf7c4-c97a-45ae-8234-e5c5b8d6a84f/7a657272-55ba-4a79-9a2e-f1ed9bc7a528/1P26v7M

.replit

@@ -14,6 +14,10 @@ run = ["npm", "run", "start"]
 localPort = 5000
 externalPort = 80
 
+[[ports]]
+localPort = 41327
+externalPort = 3000
+
 [env]
 PORT = "5000"
 

python_ml/main.py

@@ -388,26 +388,31 @@ async def get_stats():
         
         # Log stats
         cursor.execute("SELECT COUNT(*) as total FROM network_logs")
-        total_logs = cursor.fetchone()['total']
+        result = cursor.fetchone()
+        total_logs = result['total'] if result else 0
         
         cursor.execute("""
             SELECT COUNT(*) as recent FROM network_logs 
             WHERE timestamp >= NOW() - INTERVAL '1 hour'
         """)
-        recent_logs = cursor.fetchone()['recent']
+        result = cursor.fetchone()
+        recent_logs = result['recent'] if result else 0
         
         # Detection stats
         cursor.execute("SELECT COUNT(*) as total FROM detections")
-        total_detections = cursor.fetchone()['total']
+        result = cursor.fetchone()
+        total_detections = result['total'] if result else 0
         
         cursor.execute("""
             SELECT COUNT(*) as blocked FROM detections WHERE blocked = true
         """)
-        blocked_ips = cursor.fetchone()['blocked']
+        result = cursor.fetchone()
+        blocked_ips = result['blocked'] if result else 0
         
         # Router stats
         cursor.execute("SELECT COUNT(*) as total FROM routers WHERE enabled = true")
-        active_routers = cursor.fetchone()['total']
+        result = cursor.fetchone()
+        active_routers = result['total'] if result else 0
         
         # Latest training
         cursor.execute("""