Error to view my applications

{
“details”: [
{
“namespace”: “proxy”,
“attributes”: {
“cluster”: “eu1.cloud.thethings.network”,
“flags”: “UF”
},
“name”: “503_upstream_reset_before_response_started{connection_failure}”,
@type”: “type.googleapis.com/ttn.lorawan.v3.ErrorDetails”,
“correlation_id”: “f25fd1ed-5d5b-4dea-907d-e2920e0e0edd”,
“message_format”: “upstream connect error or disconnect/reset before headers. reset reason: connection failure”
}
],
“message”: “upstream connect error or disconnect/reset before headers. reset reason: connection failure”
}

Two such, similar, error messages from 2 new users - just 3 & 4 days joined Forum, correction long term joined but little activity (few days visited and <20 mins total read time) - seems too much of a co-incidence wrt Gibbs rules. Common system problem or both doing something similarly wrong…

What does documentation (ErrorDetails) tell you?

Any helpful information on the what and how? Like are you using the webui? Or cli? My crystal ball wore out a long time ago.