Core Lightning 25.09.1~1

Services Support
1

Hi,
There seems to be an on-going issue with Core Lightning. Here is what the GUI spits out when trying to load, then restarts itself over and over again.
2025-11-01T11:03:59-05:00 {“level”:“warn”,“message”:“\tAPP_SINGLE_SIGN_ON is defaulting to ‘false’. Configure as environment variable to override.”,“timestamp”:“2025-11-01 16:03:59:359”}
2025-11-01T11:03:59-05:00 {“level”:“warn”,“message”:“\tAPP_PROTOCOL is defaulting to ‘http’. Configure as environment variable to override.”,“timestamp”:“2025-11-01 16:03:59:359”}
2025-11-01T11:03:59-05:00 {“level”:“warn”,“message”:“\tAPP_LOG_FILE is defaulting to ‘./application-cln.log’. Configure as environment variable to override.”,“timestamp”:“2025-11-01 16:03:59:359”}
2025-11-01T11:03:59-05:00 {“level”:“warn”,“message”:“\tAPP_MODE is defaulting to ‘production’. Configure as environment variable to override.”,“timestamp”:“2025-11-01 16:03:59:359”}
2025-11-01T11:03:59-05:00 {“level”:“warn”,“message”:“\tAPP_CONNECT is defaulting to ‘COMMANDO’. Configure as environment variable to override.”,“timestamp”:“2025-11-01 16:03:59:359”}
2025-11-01T11:03:59-05:00 {“level”:“warn”,“message”:“\tLIGHTNING_DATA_DIR is defaulting to ‘’. Configure as environment variable to override.”,“timestamp”:“2025-11-01 16:03:59:359”}
2025-11-01T11:03:59-05:00 {“level”:“warn”,“message”:“\tLIGHTNING_WS_PROTOCOL is defaulting to ‘ws’. Configure as environment variable to override.”,“timestamp”:“2025-11-01 16:03:59:359”}
2025-11-01T11:03:59-05:00 {“level”:“warn”,“message”:“\tLIGHTNING_WS_CLIENT_KEY_FILE is defaulting to ‘./client-key.pem’. Configure as environment variable to override.”,“timestamp”:“2025-11-01 16:03:59:359”}
2025-11-01T11:03:59-05:00 {“level”:“warn”,“message”:“\tLIGHTNING_WS_CLIENT_CERT_FILE is defaulting to ‘./client.pem’. Configure as environment variable to override.”,“timestamp”:“2025-11-01 16:03:59:359”}
2025-11-01T11:03:59-05:00 {“level”:“warn”,“message”:“\tLIGHTNING_WS_CA_CERT_FILE is defaulting to ‘./ca.pem’. Configure as environment variable to override.”,“timestamp”:“2025-11-01 16:03:59:359”}
2025-11-01T11:03:59-05:00 {“level”:“warn”,“message”:“\tLIGHTNING_REST_PROTOCOL is defaulting to ‘https’. Configure as environment variable to override.”,“timestamp”:“2025-11-01 16:03:59:359”}
2025-11-01T11:03:59-05:00 {“level”:“warn”,“message”:“\tLIGHTNING_REST_HOST is defaulting to ‘localhost’. Configure as environment variable to override.”,“timestamp”:“2025-11-01 16:03:59:359”}
2025-11-01T11:03:59-05:00 {“level”:“warn”,“message”:“\tLIGHTNING_REST_TOR_HOST is defaulting to ‘’. Configure as environment variable to override.”,“timestamp”:“2025-11-01 16:03:59:359”}
2025-11-01T11:03:59-05:00 {“level”:“warn”,“message”:“\tLIGHTNING_REST_PORT is defaulting to ‘3010’. Configure as environment variable to override.”,“timestamp”:“2025-11-01 16:03:59:359”}
2025-11-01T11:03:59-05:00 {“level”:“warn”,“message”:“\tLIGHTNING_REST_CLIENT_KEY_FILE is defaulting to ‘./client-key.pem’. Configure as environment variable to override.”,“timestamp”:“2025-11-01 16:03:59:359”}
2025-11-01T11:03:59-05:00 {“level”:“warn”,“message”:“\tLIGHTNING_REST_CLIENT_CERT_FILE is defaulting to ‘./client.pem’. Configure as environment variable to override.”,“timestamp”:“2025-11-01 16:03:59:359”}
2025-11-01T11:03:59-05:00 {“level”:“warn”,“message”:“\tLIGHTNING_REST_CA_CERT_FILE is defaulting to ‘./ca.pem’. Configure as environment variable to override.”,“timestamp”:“2025-11-01 16:03:59:359”}
2025-11-01T11:03:59-05:00 {“level”:“warn”,“message”:“\tLIGHTNING_GRPC_HOST is defaulting to ‘localhost’. Configure as environment variable to override.”,“timestamp”:“2025-11-01 16:03:59:359”}
2025-11-01T11:03:59-05:00 {“level”:“warn”,“message”:“\tLIGHTNING_GRPC_TOR_HOST is defaulting to ‘’. Configure as environment variable to override.”,“timestamp”:“2025-11-01 16:03:59:359”}
2025-11-01T11:03:59-05:00 {“level”:“warn”,“message”:“\tLIGHTNING_GRPC_CLIENT_KEY_FILE is defaulting to ‘./client-key.pem’. Configure as environment variable to override.”,“timestamp”:“2025-11-01 16:03:59:359”}
2025-11-01T11:03:59-05:00 {“level”:“warn”,“message”:“\tLIGHTNING_GRPC_CLIENT_CERT_FILE is defaulting to ‘./client.pem’. Configure as environment variable to override.”,“timestamp”:“2025-11-01 16:03:59:359”}
2025-11-01T11:03:59-05:00 {“level”:“warn”,“message”:“\tLIGHTNING_GRPC_CA_CERT_FILE is defaulting to ‘./ca.pem’. Configure as environment variable to override.”,“timestamp”:“2025-11-01 16:03:59:359”}
2025-11-01T11:03:59-05:00 {“level”:“warn”,“message”:“\tServer running at http://0.0.0.0:4500”,“timestamp”:“2025-11-01 16:03:59:359”}
2025-11-01T11:05:18-05:00 {“level”:“error”,“message”:“\tRequest failed with status code 404”,“timestamp”:“2025-11-01 16:05:18:518”}
2025-11-01T11:05:18-05:00 {“level”:“error”,“message”:“\tI M HERE”,“timestamp”:“2025-11-01 16:05:18:518”}
2025-11-01T11:05:18-05:00 {“code”:“ERR_HTTP_INVALID_STATUS_CODE”,“level”:“error”,“message”:“\tUncaught Exception: Invalid status code: ERR_BAD_REQUEST”,“timestamp”:“2025-11-01 16:05:18:518”}
2025-11-01T11:05:18-05:00 npm ERR! Lifecycle script serve failed with error:
2025-11-01T11:05:18-05:00 npm ERR! Error: command failed
2025-11-01T11:05:18-05:00 npm ERR! in workspace: cln-application-backend@25.07.2
2025-11-01T11:05:18-05:00 npm ERR! at location: /app/apps/backend
2025-11-01T11:05:18-05:00 Caught SIGCHLD signal!
2025-11-01T11:06:25-05:00 Starting Wait for Bitcoin Start

2 Likes
2

I am having the same issue. anytime I try and load the GUI from local or tor the service restarts and displays this error:

Unexpected Application Error!

ChunkLoadError: Loading CSS chunk 941 failed.
(error: https://{REDACTED}.local/static/css/941.5f08661a.chunk.css)
at HTMLLinkElement. (https://{REDACTED}.local/static/js/main.8e419191.js:2:645681)

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3

Getting the same errors here

3 Likes
4

Same. I have also side-loaded versions v25.05 and v25.09.1 onto two separate test servers (neither had the Core Lightning service installed previously), and they both also have the same error (so doesn’t appear to be specific to 25.09.1~1). Also tested with multiple OS and browser combinations. Clearing the browser cache also does not help.

1 Like
5

I just tested on an Umbrel and on a native install of cln-application, and both also have the same problem. This doesn’t look like a Start9 wrapper problem, but a problem with Core Lightning itself.

2 Likes
6

For now I’ll stop loading its GUI. See if my mining rewards continue to flow in. It is the only reason I run CLN. I mainly use LND.
Thanks for confirming, and everyone else.
Let’s see what comes of this mysterious sudden error.

7

It appears to be back up and working again.

2 Likes