diff --git a/app/javascript/controllers/autosave_controller.ts b/app/javascript/controllers/autosave_controller.ts
index 863794195..0a3cc0570 100644
--- a/app/javascript/controllers/autosave_controller.ts
+++ b/app/javascript/controllers/autosave_controller.ts
@@ -1,13 +1,13 @@
-import { httpRequest, ResponseError, getConfig } from '@utils';
-import { matchInputElement, isButtonElement } from '@coldwired/utils';
+import { isButtonElement, matchInputElement } from '@coldwired/utils';
+import { getConfig, httpRequest, ResponseError } from '@utils';
 
-import { ApplicationController } from './application_controller';
 import { AutoUpload } from '../shared/activestorage/auto-upload';
 import {
-  FileUploadError,
+  ERROR_CODE_READ,
   FAILURE_CLIENT,
-  ERROR_CODE_READ
+  FileUploadError
 } from '../shared/activestorage/file-upload-error';
+import { ApplicationController } from './application_controller';
 
 const {
   autosave: { debounce_delay }
@@ -182,7 +182,7 @@ export class AutosaveController extends ApplicationController {
       .catch((e) => {
         const error = e as FileUploadError;
 
-        this.globalDispatch('autosave:error');
+        this.globalDispatch('autosave:error', { error });
 
         // Report unexpected client errors to Sentry.
         // (But ignore usual client errors, or errors we can monitor better on the server side.)
diff --git a/app/javascript/controllers/date_input_hint_controller.ts b/app/javascript/controllers/date_input_hint_controller.ts
index 8eacd6d53..d7cad2ebf 100644
--- a/app/javascript/controllers/date_input_hint_controller.ts
+++ b/app/javascript/controllers/date_input_hint_controller.ts
@@ -36,7 +36,7 @@ export class DateInputHintController extends ApplicationController {
 
   private translatePlaceholder() {
     const locale = document.documentElement.lang as 'fr' | 'en';
-    const parts = PARTS[locale];
+    const parts = PARTS[locale] ?? PARTS.fr;
     const example = new Date(2022, 9, 15).toLocaleDateString();
     return [
       Object.entries(parts).reduce(
diff --git a/app/javascript/controllers/email_input_controller.ts b/app/javascript/controllers/email_input_controller.ts
index 63fce7953..31849ceaa 100644
--- a/app/javascript/controllers/email_input_controller.ts
+++ b/app/javascript/controllers/email_input_controller.ts
@@ -1,11 +1,12 @@
-import { httpRequest } from '@utils';
-import { show, hide } from '@utils';
+import { hide, httpRequest, show } from '@utils';
 import { ApplicationController } from './application_controller';
 
-type checkEmailResponse = {
-  success: boolean;
-  suggestions: string[];
-};
+type CheckEmailResponse =
+  | {
+      success: true;
+      suggestions: string[];
+    }
+  | { success: false };
 
 export class EmailInputController extends ApplicationController {
   static targets = ['ariaRegion', 'suggestion', 'input'];
@@ -32,14 +33,17 @@ export class EmailInputController extends ApplicationController {
     const url = new URL(this.urlValue, document.baseURI);
     url.searchParams.append('email', this.inputTarget.value);
 
-    const data: checkEmailResponse | null = await httpRequest(
-      url.toString()
-    ).json();
+    const data = await httpRequest(url.toString())
+      .json<CheckEmailResponse>()
+      .catch(() => null);
 
-    if (data && data.suggestions && data.suggestions.length > 0) {
-      this.suggestionTarget.innerHTML = data.suggestions[0];
-      show(this.ariaRegionTarget);
-      this.ariaRegionTarget.focus();
+    if (data?.success) {
+      const suggestion = data.suggestions.at(0);
+      if (suggestion) {
+        this.suggestionTarget.innerHTML = suggestion;
+        show(this.ariaRegionTarget);
+        this.ariaRegionTarget.focus();
+      }
     }
   }