remove old import

app/api/admin.py

@@ -27,6 +27,8 @@ from app.auth.security import get_admin_user, get_password_hash, create_access_t
 from app.services.audit import audit_service
 from app.config import settings
 from app.services.query_utils import apply_sorting, tokenized_ilike_filter, paginate_with_total
+from app.utils.exceptions import handle_database_errors, safe_execute
+from app.utils.logging import app_logger
 
 router = APIRouter()
 
@@ -304,7 +306,8 @@ async def system_health(
         disk_available = free_gb > 1.0  # 1GB minimum
         if not disk_available:
             alerts.append(f"Low disk space: {free_gb:.1f}GB remaining")
-    except:
+    except (OSError, ImportError) as e:
+        app_logger.warning(f"Could not check disk space: {str(e)}")
         disk_available = True
     
     # Check memory (simplified)
@@ -331,7 +334,8 @@ async def system_health(
         active_sessions = db.query(User).filter(
             User.last_login > datetime.now(timezone.utc) - timedelta(hours=24)
         ).count()
-    except:
+    except Exception as e:
+        app_logger.warning(f"Could not query active sessions: {str(e)}")
         active_sessions = 0
     
     # Check last backup
@@ -346,7 +350,8 @@ async def system_health(
                 last_backup = latest_backup.name
                 if backup_age.days > 7:
                     alerts.append(f"Last backup is {backup_age.days} days old")
-    except:
+    except (OSError, FileNotFoundError) as e:
+        app_logger.warning(f"Could not check backup status: {str(e)}")
         alerts.append("Unable to check backup status")
     
     # Application uptime
@@ -398,8 +403,8 @@ async def system_statistics(
             if os.path.exists(db_path):
                 size_bytes = os.path.getsize(db_path)
                 db_size = f"{size_bytes / (1024*1024):.1f} MB"
-        except:
-            pass
+        except (OSError, ValueError) as e:
+            app_logger.warning(f"Could not get database size: {str(e)}")
     
     # Check for recent backups
     last_backup = "Not found"
@@ -410,8 +415,8 @@ async def system_statistics(
             if backup_files:
                 latest_backup = max(backup_files, key=lambda p: p.stat().st_mtime)
                 last_backup = latest_backup.name
-    except:
-        pass
+    except (OSError, FileNotFoundError) as e:
+        app_logger.warning(f"Could not check for recent backups: {str(e)}")
     
     # Application uptime
     uptime_seconds = int(time.time() - APPLICATION_START_TIME)
@@ -437,8 +442,8 @@ async def system_statistics(
                 "description": f"Customer {customer.first} {customer.last} added",
                 "timestamp": datetime.now(timezone.utc).isoformat()
             })
-    except:
-        pass
+    except Exception as e:
+        app_logger.warning(f"Could not get recent activity: {str(e)}")
     
     return SystemStats(
         total_customers=total_customers,