base 64 encoded image error when open_basedir is set.

[lingdao-dwi]

version 6.7.7

I have two Hosts A and B. In A, tcpdf used to create pdf file using the images stored in B. In host A open_basedir is set. I am reading image content from another site using file_get_contents. After base64_encode when i use the encoded image data in
$pdf->writeHTML("<img src="{$image}"/>") following errors shows.

Warning: fopen(): open_basedir restriction in effect.......
tcpdf\include\tcpdf_static.php on line 1814
Warning: fopen(file://): Failed to open stream: Operation not permitted in ......tcpdf\include\tcpdf_static.php on line 1814
TCPDF ERROR: Unable to write file: