bug修复

backend/acme_service.py

@@ -12,7 +12,7 @@ import logging
 import subprocess
 import tempfile
 from pathlib import Path
-from datetime import datetime, timedelta
+from datetime import datetime, timedelta, timezone
 
 import requests
 from cryptography import x509
@@ -326,7 +326,7 @@ class AcmeService:
         try:
             cert = x509.load_pem_x509_certificate(cert_path.read_bytes())
             not_after = cert.not_valid_after_utc
-            days_left = (not_after - datetime.utcnow()).days
+            days_left = (not_after - datetime.now(timezone.utc)).days
             return days_left <= self.config.renew_days, days_left
         except Exception:
             return True, 0