I'll put it on Sourceforge bug tracker :
https://sourceforge.net/tracker/?group_id=41586&atid=430840
In the meantime, try this :
https://xoops.org/modules/newbb/viewtopic.php?post_id=341311
Message(s): Undefined index: nletter_id in /modules/enewsletter/admin/index.php - ligne 47
nletterSetup($_GET['nletter_id']);
Avertissement(s): Missing argument 1 for newsletters(), called in /modules/enewsletter/admin/index.php on line 53 and defined in /modules/enewsletter/admin/index.php - line 288 Message(s): Undefined variable: start in /modules/enewsletter/admin/index.php - line 295 Message(s): Undefined variable: start in /modules/enewsletter/admin/index.php - line 342
newsletters();
function newsletters($start)
$result = $xoopsDB->query($sql, 5, $start);
$pagenav = new XoopsPageNav($list, 5, $start, 'start', 'action=view_archives', 1);
define("_ADM_EVENNEWS_NAME", "Name");
define("_ADM_EVENNEWS_TEMPLATE", "Template");
define("_ADM_EVENNEWS_AM_NEWSLETTERS", "Newsletters");