wkhtmltopdf exited with non-zero code {0} django html to pdf on server

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Aug 20, 2015, 1:39:40 AM8/20/15

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I am converting html to pdf using wkhtmltopdf.

But i am getting an error

raise IOError("wkhtmltopdf exited with non-zero code {0}. error:\n{1}".format(exit_code, stderr.decode("utf-8")))

IOError: wkhtmltopdf exited with non-zero code 1. error:

xvfb-run: error: Xvfb failed to start

my code is

f = open('cover_page.html', 'w')

cap_type = indi_user.cap_type

message = """<html>

</html>""" % (cap_type.encode('utf-8').strip())

f.write(message)

f.close()

pdfkit.from_url('cover_page.html', 'cover_page.pdf')

os.remove("cover_page.html")

final_pdf_list.insert(0, 'cover_page.pdf')

to_be_removed.append("cover_page.pdf")

pypdftk.concat(final_pdf_list, str(destination))

i dont know what wrong i am doing there.

i tried everything but stuck on the same error.

please help me out

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