Update app.py

app.py

@@ -106,12 +106,12 @@ def log_mining(message):
 async def startup_event():
     """Initialize mining components and start mining on startup"""
     global miner_instance
-    if not (miner_instance and miner_instance.is_alive()):
+    if not (miner_instance and hasattr(miner_instance, 'mining') and miner_instance.mining):
         log_mining("🚀 Initializing Bitcoin mining components...")
         miner_instance = ParallelMiner(num_cores=5)  # Increased cores for better performance
         # Start mining in background thread
         mining_instance = threading.Thread(
-            target=miner_instance,
+            target=miner_instance.start_mining,
             kwargs={"duration": None}  # Run forever
         )
         mining_instance.daemon = True