Small fixes

frontend/pweb/lib/utils/error/snackbar.dart

@@ -1,5 +1,3 @@
-import 'dart:async';
-
 import 'package:flutter/material.dart';
 
 import 'package:pweb/utils/error/handler.dart';
@@ -41,6 +39,26 @@ Future<void> notifyUserOfErrorX({
   );
 }
 
+void showErrorSnackBar({
+  required ScaffoldMessengerState scaffoldMessenger,
+  required String errorSituation,
+  required Object exception,
+  required AppLocalizations appLocalizations,
+  int delaySeconds = 3,
+}) {
+  final localizedError = ErrorHandler.handleErrorLocs(appLocalizations, exception);
+  final technicalDetails = exception.toString();
+  final snackBar = _buildMainErrorSnackBar(
+    errorSituation: errorSituation,
+    localizedError: localizedError,
+    technicalDetails: technicalDetails,
+    loc: appLocalizations,
+    scaffoldMessenger: scaffoldMessenger,
+    delaySeconds: delaySeconds,
+  );
+  scaffoldMessenger.showSnackBar(snackBar);
+}
+
 Future<void> notifyUserOfError({
   required BuildContext context,
   required String errorSituation,
@@ -88,26 +106,14 @@ Future<void> postNotifyUserOfError({
   required Object exception,
   required AppLocalizations appLocalizations,
   int delaySeconds = 3,
-}) {
-  final completer = Completer<void>();
-
-  WidgetsBinding.instance.addPostFrameCallback((_) async {
-    if (!context.mounted) {
-      completer.complete();
-      return;
-    }
-    await notifyUserOfErrorX(
+}) =>
+    notifyUserOfErrorX(
       context: context,
       errorSituation: errorSituation,
       exception: exception,
       appLocalizations: appLocalizations,
       delaySeconds: delaySeconds,
     );
-    completer.complete();
-  });
-
-  return completer.future;
-}
 
 Future<void> postNotifyUserOfErrorX({
   required BuildContext context,

frontend/pweb/lib/utils/snackbar.dart

@@ -10,7 +10,6 @@ Future<void> notifyUserX(
   String message, {
   int delaySeconds = 3,
 }) async {
-  if (!context.mounted) return;
   final scaffoldMessenger = ScaffoldMessenger.maybeOf(context);
   if (scaffoldMessenger != null) {
     scaffoldMessenger.showSnackBar(