"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                                                 ] 18%\r[============\u003E                                               ] 21%\r[=====================\u003E                                      ] 35%\r[==========================\u003E                                 ] 44%\r[============================\u003E                               ] 47%\r[=====================================\u003E                      ] 63%\r[=======================================\u003E                    ] 66%\r[===========================================\u003E                ] 72%\r[=============================================\u003E              ] 75%\r[===============================================\u003E            ] 79%\r[=================================================\u003E          ] 83%\r[===================================================\u003E        ] 85%\r[====================================================\u003E       ] 87%\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_snappy6adfa707d418e1.07687483.html\u0027 \u0027\/data\/sites\/web\/immo-centralebe\/tmp\/knp_snappy6adfa707d62331.90891213.pdf\u0027."