Update app.py

app.py

@@ -255,10 +255,12 @@ class BackendProcessor:
 logging.basicConfig(level=logging.INFO, format='%(asctime)s - ZEROENGINE - %(message)s', force=True)
 logger = logging.getLogger(__name__)
 
-# Comprehensive asyncio warning suppression (multiple layers)
+# Ultimate asyncio warning suppression (stderr redirection)
 import warnings
 import sys
 import os
+import re
+from io import StringIO
 
 # Set environment variables to suppress asyncio warnings
 os.environ['PYTHONASYNCIODEBUG'] = '0'
@@ -271,6 +273,29 @@ warnings.filterwarnings("ignore", category=DeprecationWarning, message=".*asynci
 warnings.filterwarnings("ignore", message=".*file descriptor.*")
 warnings.filterwarnings("ignore", message=".*Invalid file descriptor.*")
 
+# Create stderr filter to catch "Exception ignored" messages
+class AsyncioFilter:
+    def __init__(self, original_stderr):
+        self.original_stderr = original_stderr
+        self.buffer = StringIO()
+        
+    def write(self, text):
+        # Filter out asyncio file descriptor errors
+        if ("Exception ignored in:" in text and 
+            "BaseEventLoop.__del__" in text and 
+            "Invalid file descriptor: -1" in text):
+            return  # Suppress the entire traceback
+        
+        # Write to original stderr for other messages
+        self.original_stderr.write(text)
+        self.original_stderr.flush()
+    
+    def flush(self):
+        self.original_stderr.flush()
+
+# Install stderr filter
+sys.stderr = AsyncioFilter(sys.stderr)
+
 # Store original get_event_loop for restoration
 import asyncio
 _original_get_event_loop = asyncio.get_event_loop