"The exit status code \u00271\u0027 says something went wrong:\nstderr: \u0022Loading pages (1\/6)\n[\u003E ] 0%\r[======\u003E ] 10%\rWarning: Blocked access to file \n[=======\u003E ] 12%\rError: Failed to load about:blank, with network status code 301 and http status code 0 - Protocol \u0022about\u0022 is unknown\n[=============\u003E ] 22%\r[==============\u003E ] 24%\r[=================\u003E ] 29%\r[====================\u003E ] 34%\r[============================\u003E ] 47%\r[============================\u003E ] 47%\r[=============================\u003E ] 49%\r[============================================================] 100%\rCounting pages (2\/6) \n[============================================================] Object 1 of 1\rResolving links (4\/6) \n[============================================================] Object 1 of 1\rLoading headers and footers (5\/6) \nPrinting pages (6\/6)\n[\u003E ] Preparing\r[==============================\u003E ] Page 1 of 2\r[============================================================] Page 2 of 2\rDone \nExit with code 1 due to network error: ProtocolUnknownError\n\u0022\nstdout: \u0022\u0022\ncommand: \/usr\/local\/bin\/wkhtmltopdf --lowquality --enable-external-links --images --enable-internal-links --enable-javascript --javascript-delay \u0027200\u0027 --password \u0027RWtZ@Cx8Khz77%4\u0026\u0027 --username \u0027immocentrale\u0027 \u0027\/data\/sites\/web\/immo-centralebe\/tmp\/knp_snappy6605811fa6b4c3.10046401.html\u0027 \u0027\/data\/sites\/web\/immo-centralebe\/tmp\/knp_snappy6605811fa794f4.39454740.pdf\u0027."