( ! ) Warning: openssl_pkcs7_sign(): error getting private key in C:\wamp\www\tcpdf\tcpdf.php on line 8366
Call Stack
#	Time	Memory	Function	Location
1	0.0016	147752	{main}( )	..\example_052.php:0
2	0.7725	7591128	TCPDF->Output( )	..\example_052.php:117
3	0.7986	6387544	openssl_pkcs7_sign ( )	..\tcpdf.php:8366

( ! ) Notice: Undefined offset: 1 in C:\wamp\www\tcpdf\tcpdf.php on line 8378
Call Stack
#	Time	Memory	Function	Location
1	0.0016	147752	{main}( )	..\example_052.php:0
2	0.7725	7591128	TCPDF->Output( )	..\example_052.php:117

TCPDF ERROR: Some data has already been output, can't send PDF file