This doesn't seem to be a problem with hotspots as the error seems to be coming from
C:\Inetpub\vhosts\tristatehaybrokers.com\httpdocs\joomla\administrator\components\com_menus\models\item.php on line 953
Is this IIS server? Basically it seems that open_basedir is restricting the access to \metadata.xml - now the question is why this file is \ and not with the whole path to the file?
You'll need to change the settings on your server. Here you have more information on open_basedir:
docs.joomla.org/Security_Checklist/Hosting_and_Server_Setup
Regards,
Daniel