PDF generation failed

/usr/local/bin/wkhtmltopdf --footer-spacing 10 --margin-bottom 20 --footer-right 'Nick's Fonts - Desktop License 1.0.0.pdf - Page [page] of [topage]' --footer-font-size 6 -s Letter --print-media-type https://www.fontspring.com/license_pdf/wmtdl9icpm/ /home/fontspring/temp/xbUKanWL.pdf

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