create form

1 files changed, 2 insertions, 2 deletions

diff --git a/packages/web-util/src/components/Button.tsx b/packages/web-util/src/components/Button.tsx
index 18cecbdab..b142114e7 100644
--- a/packages/web-util/src/components/Button.tsx
+++ b/packages/web-util/src/components/Button.tsx
@@ -46,7 +46,7 @@ export interface ButtonHandler<T extends OperationResult<A, B>, A, B> {
   onClick: () => Promise<T | undefined>;
   onNotification: (n: NotificationMessage) => void;
   onOperationSuccess: OnOperationSuccesReturnType<T>;
-  onOperationFail: OnOperationFailReturnType<T>;
+  onOperationFail?: OnOperationFailReturnType<T>;
   onOperationComplete?: () => void;
 }
 
@@ -99,7 +99,7 @@ export function Button<T extends OperationResult<A, B>, A, B>({
               if (resp.type === "fail") {
                 const d = 'detail' in resp  ? resp.detail : undefined
                 
-                const title = handler.onOperationFail(resp as any);
+                const title = !handler.onOperationFail ? "Unexpected error." as TranslatedString : handler.onOperationFail(resp as any);
                 handler.onNotification({
                   title,
                   type: "error",