autodns: proper error management for authentication error

locales/en.json

@@ -319,6 +319,7 @@
     "domain_uninstall_app_first": "Those applications are still installed on your domain:\n{apps}\n\nPlease uninstall them using 'yunohost app remove the_app_id' or move them to another domain using 'yunohost app change-url the_app_id' before proceeding to domain removal",
     "domain_registrar_is_not_configured": "The registrar is not yet configured for domain {domain}.",
     "domain_dns_push_not_applicable": "The DNS push feature is not applicable to domain {domain}",
+    "domain_dns_push_failed_to_authenticate": "Failed to authenticate on registrar's API. Most probably the credentials are incorrect? (Error: {error})",
     "domain_config_mail_in": "Incoming emails",
     "domain_config_mail_out": "Outgoing emails",
     "domain_config_xmpp": "XMPP",

src/yunohost/dns.py

@@ -605,7 +605,11 @@ def domain_dns_push(operation_logger, domain, dry_run=False, force=False, purge=
             .with_dict(dict_object={"action": "list", "type": "all"})
     )
     client = LexiconClient(query)
+    try:
         client.provider.authenticate()
+    except Exception as e:
+        raise YunohostValidationError("domain_dns_push_failed_to_authenticate", error=str(e))
+
     try:
         current_records = client.provider.list_records()
     except Exception as e: