when call qrencode_save,return 502 bad gateway

[tvrc4m]

$qrcode_image = "/tmp/qrencode1.png"; $content = "hello world"; try{ $resource = qrencode_create($content, 2, 2);

qrencode_save($resource, $qrcode_image);

}catch(Exception $e){ print_r($e->getMessage()); }

i don't know why

[xingskycn]

请检查库是否安装完整 libpng-dev, libjpeg-dev, libgd-dev,qrencode-3.4.4.tar.gz