centos7 - wkhtmltopdf generating PDF with broken images -


i trying convert html pdf having images. till yesterday, wkhtmltopdf 0.12.1 version worked fine. today when i'm trying convert html file pdf, i'm getting resultant pdf broken images , error 

exit code 1 due network error: contentnotfounderror

i'm able view images through browser. i'm having images src below

<img src="https://example.com/images/ex.png" />


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