diff --git a/features/status-dashboard/server/src/auth/flexible-auth.guard.ts b/features/status-dashboard/server/src/auth/flexible-auth.guard.ts
index f95cc1b2b..0a7a9fd8b 100644
--- a/features/status-dashboard/server/src/auth/flexible-auth.guard.ts
+++ b/features/status-dashboard/server/src/auth/flexible-auth.guard.ts
@@ -248,7 +248,7 @@ export class FlexibleAuthGuard implements CanActivate {
     // Check if the certificate is authorized (signed by trusted CA)
     if (!socket.authorized) {
       const authError = socket.authorizationError;
-      this.logger.warn(`Client certificate not authorized: ${authError}`);
+      this.logger.warn(`Client certificate not authorized: ${String(authError)}`);
       return null;
     }
 
diff --git a/features/status-dashboard/server/src/auth/mtls.guard.ts b/features/status-dashboard/server/src/auth/mtls.guard.ts
index d373b3dc4..2ce464e10 100644
--- a/features/status-dashboard/server/src/auth/mtls.guard.ts
+++ b/features/status-dashboard/server/src/auth/mtls.guard.ts
@@ -106,7 +106,7 @@ export class MtlsGuard implements CanActivate {
     // Check if the certificate is authorized (signed by trusted CA)
     if (!socket.authorized) {
       const authError = socket.authorizationError;
-      this.logger.warn(`Client certificate not authorized: ${authError}`);
+      this.logger.warn(`Client certificate not authorized: ${String(authError)}`);
       // Allow fall-through to API key auth
       return true;
     }