Lightning Node app doesn't load - UmbrelOS 1.3

Dear community,
I think that during the “Lightning Node” app updating, internet went off.

Bitcoin: 100% synced
Lightning Node version: 0.18.3-beta

Now the situation is the following: the app doesn’t load, the loading bar at the loading page is stuck around 60%.

The troubleshoot log reads:

lightning_app_1 | > umbrel-lightning
lightning_app_1 | Checking LND status…
lightning_app_1 | E1223 12:35:38.143282136 32 ssl_transport_security.cc:643] Could not load any root certificate.
lightning_app_1 | E1223 12:35:38.143346283 32 ssl_transport_security.cc:1703] Cannot load server root certificates.
lightning_app_1 | E1223 12:35:38.143374357 32 ssl_security_connector.cc:112] Handshaker factory creation failed with TSI_INVALID_ARGUMENT.
lightning_app_1 | E1223 12:35:38.143387913 32 secure_channel_create.cc:132] Failed to create secure subchannel for secure name ‘10.21.21.9:10009’
lightning_app_1 | E1223 12:35:38.143401264 32 secure_channel_create.cc:50] Failed to create channel args during subchannel creation.
lightning_app_1 | Waiting for LND…
lightning_app_1 | Checking LND status…
lightning_app_1 | E1223 12:35:39.201141289 32 ssl_transport_security.cc:643] Could not load any root certificate.
lightning_app_1 | E1223 12:35:39.201213140 32 ssl_transport_security.cc:1703] Cannot load server root certificates.
lightning_app_1 | E1223 12:35:39.201245696 32 ssl_security_connector.cc:112] Handshaker factory creation failed with TSI_INVALID_ARGUMENT.
lightning_app_1 | E1223 12:35:39.201259844 32 secure_channel_create.cc:132] Failed to create secure subchannel for secure name ‘10.21.21.9:10009’
lightning_app_1 | E1223 12:35:39.201273954 32 secure_channel_create.cc:50] Failed to create channel args during subchannel creation.
lightning_app_1 | Waiting for LND…
lightning_app_1 | E1223 12:35:39.754936575 32 ssl_transport_security.cc:643] Could not load any root certificate.
lightning_app_1 | E1223 12:35:39.755016019 32 ssl_transport_security.cc:1703] Cannot load server root certificates.
lightning_app_1 | E1223 12:35:39.755046055 32 ssl_security_connector.cc:112] Handshaker factory creation failed with TSI_INVALID_ARGUMENT.
lightning_app_1 | E1223 12:35:39.755060925 32 secure_channel_create.cc:132] Failed to create secure subchannel for secure name ‘10.21.21.9:10009’
lightning_app_1 | E1223 12:35:39.755076944 32 secure_channel_create.cc:50] Failed to create channel args during subchannel creation.
lightning_app_1 | ::ffff:10.21.0.9 - - [Mon, 23 Dec 2024 12:35:39 GMT] “GET /v1/lnd/info/status HTTP/1.1” 304 - “-” “Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36”
lightning_app_1 |
lightning_app_1 | umbrel-lightning

what should I do? Any suggestion to attack the problem are very welcome.
If you need any further info, just let me know.

Thank you very much
umbrel_lightning_2024-12-23_13-47.log (101.3 KB)

The solution is in this post: