Seems like proxy server suddenly kicks in during import.
This is not reproducible and was only seen once - other imports work fine.
2026-06-17T10:36:56.724811+02:00 r001-fwo-prod01 fworch-importer-api: 2026-06-17T10:36:56+0200 [INFO ] [common.py :get_config_from_api : 292] has_config_changed: changes found or forced mode -> go ahead with getting config, Force = False
2026-06-17T10:42:10.025859+02:00 r001-fwo-prod01 fworch-importer-api: 2026-06-17T10:42:10+0200 [ERROR] [common.py :roll_back_exception_handl: 207] Exception: FwApiResponseDecodingError
2026-06-17T10:42:12.223210+02:00 r001-fwo-prod01 fworch-importer-api: 2026-06-17T10:42:12+0200 [INFO ] [fwconfig_import_rollback.:rollback_current_import : 30] import 29711 has been rolled back successfully
2026-06-17T10:42:12.244984+02:00 r001-fwo-prod01 fworch-importer-api: 2026-06-17T10:42:12+0200 [INFO ] [import_state_controller.p:delete_import : 335] removed import with id 29711 completely
2026-06-17T10:42:12.460504+02:00 r001-fwo-prod01 fworch-importer-api: 2026-06-17T10:42:12+0200 [INFO ] [fwo_api_call.py :complete_import : 426] import_management: import no. 29711 for management Primary CP Manager GV-FWMGT-101 (id=48) threw errors, total change count: 0, rule change count: 0, duration: 316s, ERRORS: checkpointR8x:api_call: response is not in valid json format: <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
2026-06-17T10:42:12.460680+02:00 r001-fwo-prod01 fworch-importer-api: <html><head>
2026-06-17T10:42:12.460724+02:00 r001-fwo-prod01 fworch-importer-api: <title>502 Proxy Error</title>
2026-06-17T10:42:12.460766+02:00 r001-fwo-prod01 fworch-importer-api: </head><body>
2026-06-17T10:42:12.460802+02:00 r001-fwo-prod01 fworch-importer-api: <h1>Proxy Error</h1>
2026-06-17T10:42:12.460827+02:00 r001-fwo-prod01 fworch-importer-api: <p>The proxy server received an invalid
2026-06-17T10:42:12.460855+02:00 r001-fwo-prod01 fworch-importer-api: response from an upstream server.<br />
2026-06-17T10:42:12.460897+02:00 r001-fwo-prod01 fworch-importer-api: The proxy server could not handle the request<p>Reason: <strong>Error reading from remote server</strong></p></p>
2026-06-17T10:42:12.460926+02:00 r001-fwo-prod01 fworch-importer-api: </body></html>
2026-06-17T10:42:12.460984+02:00 r001-fwo-prod01 fworch-importer-api: 2026-06-17T10:42:12+0200 [INFO ] [import_main_loop.py :main_loop : 192] import_main_loop: sleeping for 3600 seconds until next import cycle
Seems like proxy server suddenly kicks in during import.
This is not reproducible and was only seen once - other imports work fine.