Update app.py

app.py

@@ -190,7 +190,7 @@ def verify_admin_password(password):
 
 def fix_malformed_json(json_str):
     """Fix the malformed JSON from upstream server"""
-    try:x
+    try:
         # The upstream sends: {"choices":[{"delta":{"content":"text"},"index":0}],"created":123,"id":"chatcmpl-abc"123,"model":"gpt-5-nano","object":"chat.completion.chunk"}
         # We need to fix it to: {"choices":[{"delta":{"content":"text"},"index":0}],"created":123,"id":"chatcmpl-abc","model":"gpt-5-nano","object":"chat.completion.chunk"}