## 27) Error response body shape is inconsistent

backend/app/routers/config_misc.py

@@ -4,7 +4,7 @@ import shlex
 from typing import Annotated
 
 import structlog
-from fastapi import APIRouter, HTTPException, Query, Request, status
+from fastapi import APIRouter, Query, Request, status
 
 from app.dependencies import (
     AuthDep,
@@ -12,6 +12,7 @@ from app.dependencies import (
     Fail2BanStartCommandDep,
     SettingsServiceContextDep,
 )
+from app.exceptions import OperationError
 from app.models.config import (
     Fail2BanLogResponse,
     GlobalConfigResponse,
@@ -158,15 +159,12 @@ async def restart_fail2ban(
     )
 
     if not restarted:
-        raise HTTPException(
-            status_code=status.HTTP_503_SERVICE_UNAVAILABLE,
-            detail=(
-                "fail2ban was stopped but did not come back "
-                "online within 10 seconds. "
-                "Check the fail2ban log for initialisation errors. "
-                "Use POST /api/config/jails/{name}/rollback if a "
-                "specific jail is suspect."
-            ),
+        raise OperationError(
+            "fail2ban was stopped but did not come back "
+            "online within 10 seconds. "
+            "Check the fail2ban log for initialisation errors. "
+            "Use POST /api/config/jails/{name}/rollback if a "
+            "specific jail is suspect."
         )
     log.info("fail2ban_restarted")