Error!: SQLSTATE[HY000] [2002] Only one usage of each socket address (protocol/network address/port) is normally permitted

Fatal error: Uncaught Error: Call to a member function prepare() on null in W:\html\php\CLib\SQL\CrnlPDO.php:559 Stack trace: #0 [internal function]: CLib\SQL\CrnlPDO->fetch() #1 W:\html\php\CLib\SQL.php(73): call_user_func_array() #2 W:\html\php\CLib\SQL.php(207): CLib\SQL->__call() #3 W:\html\public\academics\our-faculty\faculty-profile\includes\framework.php(531): CLib\SQL->fetch() #4 W:\html\public\academics\our-faculty\faculty-profile\includes\framework.php(416): CornellFramework->get_fac_info() #5 W:\html\public\academics\our-faculty\faculty-profile\includes\framework.php(432): CornellFramework->is_faculty() #6 W:\html\public\academics\our-faculty\faculty-profile\includes\framework.php(131): CornellFramework->require_faculty() #7 [internal function]: CornellFramework->show() #8 W:\html\php\CLib\Framework.php(252): call_user_func_array() #9 W:\html\public\academics\our-faculty\faculty-profile\index.php(8): CLib\Framework->router() #10 {main} thrown in W:\html\php\CLib\SQL\CrnlPDO.php on line 559