"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                                                    ] 13%\r[==============\u003E                                             ] 24%\r[================\u003E                                           ] 27%\r[======================\u003E                                     ] 38%\r[=========================\u003E                                  ] 42%\r[==========================\u003E                                 ] 44%\r[===========================\u003E                                ] 45%\r[===================================\u003E                        ] 59%\r[========================================\u003E                   ] 67%\r[=========================================\u003E                  ] 69%\r[============================================\u003E               ] 74%\r[==============================================\u003E             ] 78%\r[=================================================\u003E          ] 82%\r[===================================================\u003E        ] 86%\r[====================================================\u003E       ] 88%\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_snappy6adfa76f7c25d1.36843626.html\u0027 \u0027\/data\/sites\/web\/immo-centralebe\/tmp\/knp_snappy6adfa76f7c8233.17524009.pdf\u0027."