<ul><li>Fixed usersearch.php: $getCompany null array access on commented JS line 336 ($getCompany["acct_keyfk"] → ?? ""); $super_admin undefined → $_SESSION["super_admin"] ?? 0</li><li>Fixed searchdata.php: extracted all $_POST accesses to local vars with ?? null/""; fixed $msg undefined; fixed $picurl null; fixed address echo lines with htmlspecialchars + (string) cast</li><li>Fixed accounts.php: checkIFOwnerRole() now guards $_SESSION["userSiteRole"] empty; uses proper null coalescing throughout</li><li>Fixed search/invite.php: enabled error_reporting(E_ALL); replaced all unguarded $_POST accesses with ?? null/""; fixed $ucn["company_name"] null guard</li><li>Fixed search/send_email.php: guarded $_REQUEST["sitelinkid"] → ?? ""; fixed $site["subdomainname"] null access; fixed $_SESSION["super_admin"] → ?? 0</li><li>Fixed inc/ajax.php: $_POST["acctkey"] → ?? null</li><li>Fixed inc/avuser_get_info.php: $_POST["acctkey"] → ?? null</li><li>Fixed inc/update_avuserinfo.php: $_POST["id"] → ?? null</li><li>Fixed clientsAccounts.php: $_REQUEST["rids"] → ?? ""; cast $_SESSION["activeacctid"] to int in SQL query to prevent injection</li><li>All 3 module tabs verified clean: 0 PHP errors on accounts, invite_user, org_members tabs</li></ul>