diff --git a/api/services/errors/base.py b/api/services/errors/base.py
index 0f9631190f..12eb6f51d0 100644
--- a/api/services/errors/base.py
+++ b/api/services/errors/base.py
@@ -1,3 +1,3 @@
 class BaseServiceError(ValueError):
-    def __init__(self, description: str | None = None):
+    def __init__(self, description: str = ""):
         self.description = description
diff --git a/api/services/errors/enterprise.py b/api/services/errors/enterprise.py
index c9126199fd..60f518dd3c 100644
--- a/api/services/errors/enterprise.py
+++ b/api/services/errors/enterprise.py
@@ -6,7 +6,7 @@ from services.errors.base import BaseServiceError
 class EnterpriseServiceError(BaseServiceError):
     """Base exception for enterprise service errors."""
 
-    def __init__(self, description: str | None = None, status_code: int | None = None):
+    def __init__(self, description: str = "", status_code: int | None = None):
         super().__init__(description)
         self.status_code = status_code
 
@@ -20,26 +20,26 @@ class EnterpriseAPIError(EnterpriseServiceError):
 class EnterpriseAPINotFoundError(EnterpriseServiceError):
     """Enterprise API returned 404 Not Found."""
 
-    def __init__(self, description: str | None = None):
+    def __init__(self, description: str = ""):
         super().__init__(description, status_code=404)
 
 
 class EnterpriseAPIForbiddenError(EnterpriseServiceError):
     """Enterprise API returned 403 Forbidden."""
 
-    def __init__(self, description: str | None = None):
+    def __init__(self, description: str = ""):
         super().__init__(description, status_code=403)
 
 
 class EnterpriseAPIUnauthorizedError(EnterpriseServiceError):
     """Enterprise API returned 401 Unauthorized."""
 
-    def __init__(self, description: str | None = None):
+    def __init__(self, description: str = ""):
         super().__init__(description, status_code=401)
 
 
 class EnterpriseAPIBadRequestError(EnterpriseServiceError):
     """Enterprise API returned 400 Bad Request."""
 
-    def __init__(self, description: str | None = None):
+    def __init__(self, description: str = ""):
         super().__init__(description, status_code=400)
diff --git a/api/services/errors/llm.py b/api/services/errors/llm.py
index 5bf34f3aa6..407779d795 100644
--- a/api/services/errors/llm.py
+++ b/api/services/errors/llm.py
@@ -1,9 +1,9 @@
 class InvokeError(Exception):
     """Base class for all LLM exceptions."""
 
-    description: str | None = None
+    description: str = ""
 
-    def __init__(self, description: str | None = None):
+    def __init__(self, description: str = ""):
         self.description = description
 
     def __str__(self):