Problem with Quote PDF - Version 1.4.10


I have problem with Quote pdf, when I try to view my quotes pdf it show without photos and when I check the log i find this error:

ERROR - 2017-03-13 01:26:55 --> Severity: Warning  --> fopen( to open stream: php_network_getaddresses: getaddrinfo failed: Temporary failure in name resolution /home2/invospar/public_html/user32/vendor/kovah/mpdf/mpdf.php 11890

Please advise me how to resolve this problem.

I solve this problem by adding ' ' to the img url.