show warning if bank settings are wrong

packages/demobank-ui/src/hooks/backend.ts

@@ -53,10 +53,18 @@ interface LoggedOut {
 
 export function getInitialBackendBaseURL(): string {
   const overrideUrl = localStorage.getItem("bank-base-url");
-
-  return canonicalizeBaseUrl(
-    overrideUrl ? overrideUrl : bankUiSettings.backendBaseURL,
-  );
+  if (!overrideUrl) {
+    //normal path
+    if (!bankUiSettings.backendBaseURL) {
+      console.error(
+        "ERROR: backendBaseURL was overridden by a setting file and missing. Setting value to 'window.origin'",
+      );
+      return canonicalizeBaseUrl(window.origin);
+    }
+    return canonicalizeBaseUrl(bankUiSettings.backendBaseURL);
+  }
+  // testing/development path
+  return canonicalizeBaseUrl(overrideUrl);
 }
 
 export const defaultState: BackendState = {

packages/demobank-ui/src/pages/AccountPage.tsx

@@ -20,15 +20,13 @@ import {
   HttpResponsePaginated,
   useTranslationContext,
 } from "@gnu-taler/web-util/lib/index.browser";
-import { Fragment, h, VNode } from "preact";
-import { Loading } from "../components/Loading.js";
+import { Fragment, VNode, h } from "preact";
 import { Transactions } from "../components/Transactions/index.js";
-import { PageStateType, notifyError } from "../context/pageState.js";
+import { useBackendContext } from "../context/backend.js";
+import { notifyError } from "../context/pageState.js";
 import { useAccountDetails } from "../hooks/access.js";
 import { LoginForm } from "./LoginForm.js";
 import { PaymentOptions } from "./PaymentOptions.js";
-import { StateUpdater } from "preact/hooks";
-import { useBackendContext } from "../context/backend.js";
 
 interface Props {
   account: string;

packages/demobank-ui/src/pages/QrCodeSection.tsx

@@ -48,20 +48,9 @@ export function QrCodeSection({
           <p>
             <i18n.Translate>
               Click{" "}
-              <a
-                id="linkqr"
-                href={talerWithdrawUri}
-              >{i18n.str`this taler:// link`}</a>{" "}
-              to open your Taler wallet
+              <a href={talerWithdrawUri}>{i18n.str`this taler:// link`}</a> to
+              open your Taler wallet
             </i18n.Translate>{" "}
-            <i18n.Translate>
-              or try{" "}
-              <a
-                id="linkqr"
-                href={"ext+" + talerWithdrawUri}
-              >{i18n.str`this ext+taler:// link`}</a>{" "}
-              if your browser does not support <b>taler://</b> scheme.
-            </i18n.Translate>
           </p>
           <br />
           <a