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ActiveRecord::DatabaseConnectionError

app/models/summary.rb:59 

There is an issue connecting with your hostname: db.

Please check your database configuration and ensure there is a valid connection to your database.

Backtrace

app/models/summary.rb:59:in 'Summary.missing_or_stale_days'
app/controllers/concerns/summary_checker.rb:14:in 'SummaryChecker#missing_or_stale_summary_days'
app/controllers/concerns/summary_checker.rb:5:in 'SummaryChecker#load_missing_or_stale_summary_days'
app/controllers/balance/home_controller.rb:17:in 'Balance::HomeController#index'
app/controllers/concerns/auto_locale.rb:14:in 'ApplicationController#switch_locale'

Request

Name ErrorsController#show
Method GET
URL https://demo.solectrus.de/500
Browser FirefoxFirefox 149

Parameters

{
  "action": "index",
  "timeframe": "day",
  "controller": "balance/home",
  "sensor_name": "inverter_power"
}

Headers

Host demo.solectrus.de
Accept text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Cf-Ray 9ed1933c39d3c7f4-DUS
Cdn-Loop cloudflare; loops=1
Priority u=0, i
X-Real-Ip 172.69.109.206
Cf-Visitor {"scheme":"https"}
User-Agent Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:149.0) Gecko/20100101 Firefox/149.0
Cf-Ipcountry DE
Sec-Fetch-Dest document
Sec-Fetch-Mode navigate
Sec-Fetch-Site none
Sec-Fetch-User ?1
Accept-Encoding gzip, br
Accept-Language de,en-US;q=0.9,en;q=0.8
X-Forwarded-For 141.60.14.176, 172.69.109.206
Cf-Connecting-Ip 141.60.14.176
X-Forwarded-Host demo.solectrus.de
X-Forwarded-Port 443
X-Forwarded-Proto https
X-Forwarded-Server app.traefik.completho.de
Upgrade-Insecure-Requests 1

Context

controller 
#<Balance::HomeController:0x00007ff7e2625f20>

Environment

os Linux 6.8.0-106-generic
cwd /app
pid 1
host app.demo.solectrus.de
ruby ruby 4.0.2 (2026-03-17 revision d3da9fec82) +YJIT +PRISM [x86_64-linux-musl]
rails 8.1.3
revision v1.1.1-140-g896ecf1

Server

Load CPU RAM Swap Disk
app.demo.solectrus.de Load avg 4% CPU 6% RAM 82% Swap 53% Disk 14%

Deployments 2

v1.1.1-140-g896ecf1 16 Apr 01:42
v1.1.1-128-gb3dee4b 14 Apr 01:41