Fatal error: Uncaught Error: Call to undefined function xdebug_start_trace() in /var/www/uader_cs/plugins/sfSwiftPlugin/lib/swift/tests/benchmarks/mem_sending_with_swift.php:13 Stack trace: #0 {main} thrown in /var/www/uader_cs/plugins/sfSwiftPlugin/lib/swift/tests/benchmarks/mem_sending_with_swift.php on line 13