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Your message was too long, here's your message at the allowed limit: We use prefect 3 6 15 We get this error on some flow runs it is not systematic It ends up cancelled by the timeout we set 07 22 17 894 | INFO | Task run 'download_modis_data-d16' - Starting to download the reference period 07 22 17 948 | DEBUG | prefect events clients - Reconnecting websocket connection 07 22 17 949 | DEBUG | prefect events clients - Opening websocket connection 07 22 18 089 | DEBUG | prefect events clients - Pinging to ensure websocket connected 07 22 18 183 | DEBUG | prefect events clients - Pong received Websocket connected 07 22 18 183 | DEBUG | prefect events clients - Resending 0 unconfirmed events 07 22 18 184 | DEBUG | prefect events clients - Finished resending unconfirmed events 07 22 18 184 | DEBUG | prefect client - Connecting to API at <https //api prefect cloud/api/accounts/XXXXXXXXXXXXXXXX/workspaces/XXXXXXXXXXXXXXXX/> 07 22 18 392 | DEBUG | prefect events clients - EventsClient(id=128014307590800) Emitting event id=019c6a7a-7b97-7738-822d-37adb06f26c1 07 22 18 392 | DEBUG | prefect events clients - Added event id=019c6a7a-7b97-7738-822d-37adb06f26c1 to unconfirmed events list There are now 1 unconfirmed events 07 22 18 392 | DEBUG | prefect events clients - EventsClient(id=128014307590800) Emit reconnection attempt 0 07 22 18 393 | DEBUG | prefect events clients - EventsClient(id=128014307590800) Sending event id=019c6a7a-7b97-7738-822d-37adb06f26c1 07 22 18 393 | DEBUG | prefect events clients - EventsClient(id=128014307590800) Checkpointing event id=019c6a7a-7b97-7738-822d-37adb06f26c1 07 22 18 394 | DEBUG | prefect events clients - EventsClient(id=128014307590800) Emitting event id=019c6a7a-7ba3-7b01-870f-0d15146b622c 07 22 18 395 | DEBUG | prefect events clients - Added event id=019c6a7a-7ba3-7b01-870f-0d15146b622c to unconfirmed events list There are now 2 unconfirmed events 07 22 18 395 | DEBUG | prefect events clients - EventsClient(id=128014307590800) Emit reconnection attempt 0 07 22 18 395 | DEBUG | prefect events clients - EventsClient(id=128014307590800) Sending event id=019c6a7a-7ba3-7b01-870f-0d15146b622c 07 22 18 395 | DEBUG | prefect events clients - EventsClient(id=128014307590800) Checkpointing event id=019c6a7a-7ba3-7b01-870f-0d15146b622c 07 22 18 398 | DEBUG | prefect events clients - EventsClient(id=128014307590800) Emitting event id=019c6a7a-7c94-795d-bf48-4f8aed623a6d 07 22 18 398 | DEBUG | prefect events clients - Added event id=019c6a7a-7c94-795d-bf48-4f8aed623a6d to unconfirmed events list There are now 3 unconfirmed events 07 22 18 398 | DEBUG | prefect events clients - EventsClient(id=128014307590800) Emit reconnection attempt 0 07 22 18 399 | DEBUG | prefect events clients - EventsClient(id=128014307590800) Sending event id=019c6a7a-7c94-795d-bf48-4f8aed623a6d 07 22 18 399 | DEBUG | prefect events clients - EventsClient(id=128014307590800) Checkpointing event id=019c6a7a-7c94-795d-bf48-4f8aed623a6d 07 22 56 125 | DEBUG | prefect events clients - Retryable error with 1/10 attempts 07 22 56 126 | DEBUG | prefect events clients - Reconnecting 07 22 56 251 | DEBUG | prefect events clients - pinging 07 22 56 346 | DEBUG | prefect events clients - authenticating 07 22 56 460 | DEBUG | prefect events clients - auth result {'type' 'auth_success'} 07 22 56 462 | DEBUG | prefect events clients - filtering events since 2026-02-17 07 21 56 461702+00 00 07 24 46 256 | DEBUG |