diff --git a/htdocs/core/triggers/interface_50_modAgenda_ActionsAuto.class.php b/htdocs/core/triggers/interface_50_modAgenda_ActionsAuto.class.php
index 8e23c258d88..d0597f617fb 100644
--- a/htdocs/core/triggers/interface_50_modAgenda_ActionsAuto.class.php
+++ b/htdocs/core/triggers/interface_50_modAgenda_ActionsAuto.class.php
@@ -936,7 +936,11 @@ class InterfaceActionsAuto extends DolibarrTriggers
 			}
 		}
 
-		$object->actionmsg = dol_concatdesc($langs->transnoentities("Author").': '.$user->login, $object->actionmsg);
+		if (!empty($user->login)) {
+			$object->actionmsg = dol_concatdesc($langs->transnoentities("Author").': '.$user->login, $object->actionmsg);
+		} elseif (isset($object->origin_email)) {
+			$object->actionmsg = dol_concatdesc($langs->transnoentities("Author").': '.$object->origin_email, $object->actionmsg);
+		}
 
 		dol_syslog("Trigger '".$this->name."' for action '$action' launched by ".__FILE__.". id=".$object->id);
 
diff --git a/htdocs/public/ticket/create_ticket.php b/htdocs/public/ticket/create_ticket.php
index 8f2657b9db6..b911e7480d3 100644
--- a/htdocs/public/ticket/create_ticket.php
+++ b/htdocs/public/ticket/create_ticket.php
@@ -258,7 +258,7 @@ if (empty($reshook) && $action == 'create_ticket' && GETPOST('add', 'alpha')) {
 
 				$sendto = GETPOST('email', 'alpha');
 
-				$from = $conf->global->MAIN_INFO_SOCIETE_NOM.'<'.$conf->global->TICKET_NOTIFICATION_EMAIL_FROM.'>';
+				$from = $conf->global->MAIN_INFO_SOCIETE_NOM.' <'.$conf->global->TICKET_NOTIFICATION_EMAIL_FROM.'>';
 				$replyto = $from;
 				$sendtocc = '';
 				$deliveryreceipt = 0;
@@ -298,7 +298,6 @@ if (empty($reshook) && $action == 'create_ticket' && GETPOST('add', 'alpha')) {
 					}
 					$message_admin .= '</ul>';
 
-					$message_admin .= '</ul>';
 					$message_admin .= '<p>'.$langs->trans('Message').' : <br>'.$object->message.'</p>';
 					$message_admin .= '<p><a href="'.dol_buildpath('/ticket/card.php', 2).'?track_id='.$object->track_id.'" rel="nofollow noopener">'.$langs->trans('SeeThisTicketIntomanagementInterface').'</a></p>';
 
diff --git a/htdocs/public/ticket/view.php b/htdocs/public/ticket/view.php
index 3fec075160b..6485f9fcee2 100644
--- a/htdocs/public/ticket/view.php
+++ b/htdocs/public/ticket/view.php
@@ -262,8 +262,10 @@ if ($action == "view_ticket" || $action == "presend" || $action == "close" || $a
 
 		// Category
 		print '<tr><td>'.$langs->trans("Category").'</td><td>';
-		print img_picto('', 'category', 'class="pictofixedwidth"');
-		print dol_escape_htmltag($object->dao->category_label);
+		if ($object->dao->category_label) {
+			print img_picto('', 'category', 'class="pictofixedwidth"');
+			print dol_escape_htmltag($object->dao->category_label);
+		}
 		print '</td></tr>';
 
 		// Severity
diff --git a/htdocs/ticket/card.php b/htdocs/ticket/card.php
index cbdb0f7a6df..bbb563a1486 100644
--- a/htdocs/ticket/card.php
+++ b/htdocs/ticket/card.php
@@ -1126,15 +1126,21 @@ if ($action == 'create' || $action == 'presend') {
 		} else {
 			// Type
 			print '<tr><td class="titlefield">'.$langs->trans("Type").'</td><td>';
-			print $langs->getLabelFromKey($db, 'TicketTypeShort'.$object->type_code, 'c_ticket_type', 'code', 'label', $object->type_code);
+			if (!empty($object->type_code)) {
+				print $langs->getLabelFromKey($db, 'TicketTypeShort'.$object->type_code, 'c_ticket_type', 'code', 'label', $object->type_code);
+			}
 			print '</td></tr>';
 			// Group
 			print '<tr><td>'.$langs->trans("TicketCategory").'</td><td>';
-			print $langs->getLabelFromKey($db, 'TicketCategoryShort'.$object->category_code, 'c_ticket_category', 'code', 'label', $object->category_code);
+			if (!empty($object->category_code)) {
+				print $langs->getLabelFromKey($db, 'TicketCategoryShort'.$object->category_code, 'c_ticket_category', 'code', 'label', $object->category_code);
+			}
 			print '</td></tr>';
 			// Severity
 			print '<tr><td>'.$langs->trans("TicketSeverity").'</td><td>';
-			print $langs->getLabelFromKey($db, 'TicketSeverityShort'.$object->severity_code, 'c_ticket_severity', 'code', 'label', $object->severity_code);
+			if (!empty($object->severity_code)) {
+				print $langs->getLabelFromKey($db, 'TicketSeverityShort'.$object->severity_code, 'c_ticket_severity', 'code', 'label', $object->severity_code);
+			}
 			print '</td></tr>';
 		}
 		print '</table>'; // End table actions
diff --git a/htdocs/ticket/class/ticket.class.php b/htdocs/ticket/class/ticket.class.php
index 1d449a57e17..d29a4913b6b 100644
--- a/htdocs/ticket/class/ticket.class.php
+++ b/htdocs/ticket/class/ticket.class.php
@@ -461,7 +461,7 @@ class Ticket extends CommonObject
 			$sql .= " ".(!isset($this->progress) ? '0' : "'".$this->db->escape($this->progress)."'").",";
 			$sql .= " ".(!isset($this->timing) ? 'NULL' : "'".$this->db->escape($this->timing)."'").",";
 			$sql .= " ".(!isset($this->type_code) ? 'NULL' : "'".$this->db->escape($this->type_code)."'").",";
-			$sql .= " ".(!isset($this->category_code) ? 'NULL' : "'".$this->db->escape($this->category_code)."'").",";
+			$sql .= " ".(empty($this->category_code) || $this->category_code == '-1' ? 'NULL' : "'".$this->db->escape($this->category_code)."'").",";
 			$sql .= " ".(!isset($this->severity_code) ? 'NULL' : "'".$this->db->escape($this->severity_code)."'").",";
 			$sql .= " ".(!isset($this->datec) || dol_strlen($this->datec) == 0 ? 'NULL' : "'".$this->db->idate($this->datec)."'").",";
 			$sql .= " ".(!isset($this->date_read) || dol_strlen($this->date_read) == 0 ? 'NULL' : "'".$this->db->idate($this->date_read)."'").",";