[PATCH proxmox-backup v3] ui: encryption keys: show error text instead of empty popup in API alerts

[Arthur Bied-Charreton <a.bied-charreton@proxmox.com>]

The errors returned by the encryption-keys and tape-encryption-keys
endpoints are not plain strings, so the alerts displayed on API2 errors
like failed permission checks end up being empty and therefore not very
helpful.

Extract the error messages to display them correctly in alerts.

Signed-off-by: Arthur Bied-Charreton <a.bied-charreton@proxmox.com>
---
Sorry forgot to fold the htmlStatus change into the commit..

 www/config/EncryptionKeysView.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/www/config/EncryptionKeysView.js b/www/config/EncryptionKeysView.js
index 0f9367c7..db2fd641 100644
--- a/www/config/EncryptionKeysView.js
+++ b/www/config/EncryptionKeysView.js
@@ -168,7 +168,7 @@ Ext.define('PBS.config.EncryptionKeysView', {
                     });
                 }
             } catch (error) {
-                Ext.Msg.alert(gettext('Error'), error);
+                Ext.Msg.alert(gettext('Error'), error.htmlStatus || gettext('Unknown error'));
             }
 
             try {
@@ -181,7 +181,7 @@ Ext.define('PBS.config.EncryptionKeysView', {
                     });
                 }
             } catch (error) {
-                Ext.Msg.alert(gettext('Error'), error);
+                Ext.Msg.alert(gettext('Error'), error.htmlStatus || gettext('Unknown error'));
             }
 
             let store = view.getStore().rstore;
-- 
2.47.3