yfpExceptionHandler() is handling an Error object.
This is not handling a YfpException, but a system error.
Show it and get out.

TypeError: YfpsiteRhSocial::__construct(): Argument #1 ($gConfXml) must be of type xml_yfpXmlConfig, null given, called in /home/cpopunwide/public_html/yfpcom/public/php/yfpContent/yfp-facebook.php on line 300 and defined in /home/cpopunwide/public_html/yfpcom/public/php/yfpContent/yfp-facebook.php:166
Stack trace:
#0 /home/cpopunwide/public_html/yfpcom/public/php/yfpContent/yfp-facebook.php(300): YfpsiteRhSocial->__construct()
#1 /home/cpopunwide/public_html/yfpcom/public/php/yincl/Page/YfpStdSbComponents.php(155): getYfpFbButtonBox()
#2 /home/cpopunwide/public_html/yfpcom/public/php/yfpContent/yfpSidebar.php(54): Yfp\Page\YfpStdSbComponents->__construct()
#3 /home/cpopunwide/public_html/yfpcom/public/php/templates/yfp-std-page.tpl.php(94): getYfpStandardRhCol()
#4 /home/cpopunwide/public_html/yfpcom/public/Pnf404.php(165): templateBuildPage()
#5 /home/cpopunwide/public_html/yfpcom/public/index.php(31): require('/home/cpopunwid...')
#6 {main}
Bye.