when installing plugins initially it showing more errors. what is the reason and it support to wordpress latest version 5.8? im using wordpress 5.8 only. please find the below code which i got error like below.
Please kindly support me and do the needful
Warning: sprintf(): Too few arguments in C:\xampp\htdocs\realestate\wp-admin\includes\class-bulk-upgrader-skin.php on line 152
<h2 style="color: #1d2327; font-size: 1em; margin: 1.33em 0px; background-color: #f0f0f1;">Installing and Activating Plugin Realty Portal - Agent Dashboard (9/18)</h2>
An error occurred while installing Realty Portal - Agent Dashboard: The plugin generated unexpected output. Warning: call_user_func_array() expects parameter 1 to be a valid callback, class 'RP_AddOn_Member' not found in C:\xampp\htdocs\realestate\wp-includes\class-wp-hook.php on line 303 .