Fatal error: Uncaught TypeError: Argument 1 passed to JpGraphException::defaultHandler() must be an instance of Exception, instance of Error given in /opt/lampp/htdocs/portal/jpgraph/jpgraph_errhandler.inc.php:159 Stack trace: #0 [internal function]: JpGraphException::defaultHandler(Object(Error)) #1 {main} thrown in /opt/lampp/htdocs/portal/jpgraph/jpgraph_errhandler.inc.php on line 159