Skip nonexistent contacts in Pofile/Contacts

- Address part of https://github.com/friendica/friendica/issues/12486#issuecomment-1428489772

src/Module/Profile/Contacts.php

@@ -121,11 +121,14 @@ class Contacts extends Module\BaseProfile
 					['uri-id' => $contact['uri-id'], 'uid' => [0, $this->userSession->getLocalUserId()]],
 					['order' => ['uid' => 'DESC']]
 				);
-				return Module\Contact::getContactTemplateVars($contact);
+				return $contact ? Module\Contact::getContactTemplateVars($contact) : null;
 			},
 			Model\Contact::selectToArray(['uri-id'], $condition, $params)
 		);
 
+		// Remove nonexistent contacts
+		$contacts = array_filter($contacts);
+
 		$desc = '';
 		switch ($type) {
 			case 'followers':