Devin suggested fixes

Author: samejr

apps/webapp/app/components/errors/ConfigureErrorAlerts.tsx

@@ -87,8 +87,10 @@ export function ConfigureErrorAlerts({
     return qs ? `?${qs}` : location.pathname;
   })();
 
+  const hasHandledSuccess = useRef(false);
   useEffect(() => {
-    if (fetcher.state === "idle" && fetcher.data?.ok) {
+    if (fetcher.state === "idle" && fetcher.data?.ok && !hasHandledSuccess.current) {
+      hasHandledSuccess.current = true;
       toast.success("Alert settings saved");
       navigate(closeHref, { replace: true });
     }

apps/webapp/app/presenters/v3/ErrorGroupPresenter.server.ts

@@ -368,7 +368,7 @@ export class ErrorGroupPresenter extends BasePresenter {
 
     let ignoredByUserDisplayName: string | null = null;
     if (row.ignoredByUserId) {
-      const user = await this.replica.user.findUnique({
+      const user = await this.replica.user.findFirst({
         where: { id: row.ignoredByUserId },
         select: { displayName: true, name: true, email: true },
       });

apps/webapp/app/routes/_app.orgs.$organizationSlug.projects.$projectParam.env.$envParam.errors.$fingerprint/route.tsx

@@ -170,9 +170,13 @@ export const action = async ({ request, params }: ActionFunctionArgs) => {
         qb.groupBy("error_fingerprint, task_identifier");
 
         const [err, results] = await qb.execute();
-        if (!err && results && results.length > 0) {
-          occurrenceCountAtIgnoreTime = results[0].occurrence_count;
+        if (err || !results || results.length === 0) {
+          return json(
+            { error: "Failed to fetch current occurrence count. Please try again." },
+            { status: 500 }
+          );
         }
+        occurrenceCountAtIgnoreTime = results[0].occurrence_count;
       }
 
       await actions.ignoreError(identifier, {