At the beginning of file layouts\joomla\content\emptystate.php, some variables are initialized. Variables $title and $content are initialised twice. See below. Although this doesn't have any impact, it should be fixed.
$formURL    = $displayData['formURL'] ?? '';
$createURL  = $displayData['createURL'] ?? '';
$helpURL    = $displayData['helpURL'] ?? '';
$title      = $displayData['title'] ?? Text::_($textPrefix . 'EMPTYSTATE_TITLE');                   <<<==========
$content    = $displayData['content'] ?? Text::($textPrefix . 'EMPTYSTATE_CONTENT'); <<<==========
$icon       = $displayData['icon'] ?? 'icon-copy article';
$append     = $displayData['formAppend'] ?? '';
$title      = $displayData['title'] ?? Text::($textPrefix . 'EMPTYSTATE_TITLE');                   <<<==========
$content    = $displayData['content'] ?? Text::($textPrefix . '_EMPTYSTATE_CONTENT'); <<<==========
$btnadd     = $displayDat
Initialise any variable only once.
Delete the second initialisations
None.
| Labels | Added: 
No Code Attached Yet | ||
 
                | Status | New | ⇒ | Closed | 
| Closed_Date | 0000-00-00 00:00:00 | ⇒ | 2022-02-04 01:42:37 | 
| Closed_By | ⇒ | Quy | 
Please test #36937. Thanks.