Add this code either in Blank Child Theme’s funtion.php file or in wplms customizer plugin > wplms-customizer.php
add_filter('wplms_get_element_icon',function($icon,$component_name){
//print_r($component_name); //find out component names
if($component_name == 'jitsi'){
return '<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1" stroke-linecap="round" stroke-linejoin="round" class="feather feather-video"><polygon points="23 7 16 12 23 17 23 7"></polygon><rect x="1" y="5" width="15" height="14" rx="2" ry="2"></rect></svg>';
}
return $icon;
},10,2);