Groups Reporting error

[Strutt20]

#0 /var/www/xenforo/html/library/Nobita/Teams/ReportHandler/Post.php(23): XenForo_Application::handlePhpError(8, 'Undefined index...', '/var/www/xenfor...', 23, Array)
#1 /var/www/xenforo/html/library/XenForo/Model/Report.php(415): Nobita_Teams_ReportHandler_Post->getReportDetailsFromContent(Array)
#2 /var/www/xenforo/html/library/SV/ReportImprovements/XenForo/Model/Report.php(91): XenForo_Model_Report->reportContent('team_post', Array, 'Testingggggg', Array)
#3 /var/www/xenforo/html/library/Nobita/Teams/ControllerPublic/Post.php(374): SV_ReportImprovements_XenForo_Model_Report->reportContent('team_post', Array, 'Testingggggg')
#4 /var/www/xenforo/html/library/XenForo/FrontController.php(369): Nobita_Teams_ControllerPublic_Post->actionReport()
#5 /var/www/xenforo/html/library/XenForo/FrontController.php(152): XenForo_FrontController->dispatch(Object(XenForo_RouteMatch))
#6 /var/www/xenforo/html/index.php(13): XenForo_FrontController->run()
#7 {main}
array(3) {
["url"] => string(47) "xenforo/groups/posts/74/report"
["_GET"] => array(0) {
}
["_POST"] => array(6) {
["message"] => string(12) "Testingggggg"
["_xfToken"] => string(8) "********"
["_xfConfirm"] => string(1) "1"
["_xfRequestUri"] => string(25) "/groups/staff-request.50/"
["_xfNoRedirect"] => string(1) "1"
["_xfResponseType"] => string(4) "json"
}
}

PHP Version 5.6.30

Groups 2.9.1a (1.x version)

Error displayed when reporting a message in groups.