Merge pull request #7153 from christianbeeznest/fixes-updates195

Session: Improve session category add/edit UI

Author: christianbeeznest

public/main/inc/lib/sessionmanager.lib.php

@@ -3355,7 +3355,7 @@ public static function edit_category_session(
         $sday_end
     ) {
         $tbl_session_category = Database::get_main_table(TABLE_MAIN_SESSION_CATEGORY);
-        $name = html_filter(trim($sname));
+        $name = trim((string) $sname);
         $year_start = intval($syear_start);
         $month_start = intval($smonth_start);
         $day_start = intval($sday_start);