[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"problem-detail-error-time-10t21-23z-level-warning-msg-the-acme":3},{"stack":4,"error":5,"seoName":6,"seoStack":7,"seo":8,"breadcrumb":10,"titlePrefix":17,"titleAccent":18,"lead":19,"facts":22,"why":38,"log":56,"fix":77,"engine":86,"related":94,"pitch":101},"dockerfile","time-10t21-23z-level-warning-msg-the-acme","Docker Compose app cannot start because Traefik is undefined","Dockerfile",{"description":9},"Learn what causes Docker Compose app cannot start because Traefik is undefined, how PanelAlpha Engine responds to it during deployment.",[11,14,16],{"label":12,"href":13},"App Installations","\u002Fapps",{"label":7,"href":15},"\u002Fapps\u002Fstacks\u002Fdockerfile",{"label":6},"Docker Compose app cannot start because ","Traefik is undefined",[20],{"text":21},"Error recorded 1 times in PanelAlpha Engine deploys on Dockerfile. The deploy log below is the recorded failure output.",[23,28,31,33],{"label":24,"value":25,"tone":26,"tooltip":27},"Type","Error","err","An error that occurred in the deployed application. It is not necessarily a PanelAlpha Engine error, but we keep working on improvements so you run into fewer of them.",{"label":29,"value":30},"Seen","1 times",{"label":32,"value":7},"Where",{"label":34,"value":35,"tone":36,"tooltip":37},"Status","Fixed (2.1.0)","ok","Fixed in PanelAlpha Engine 2.1.0. The error is resolved on our side, so you will not run into it anymore.",{"heading":39,"body":40},"Why it happens",[41,43,46,48,50,52,54],{"text":42},"The application service declares a dependency on ",{"text":44,"code":45},"traefik",true,{"text":47},", but the Compose project passed to Docker Compose does not define that service. This makes the Compose file invalid before containers can start. Missing ",{"text":49,"code":45},"ACME_EMAIL",{"text":51}," and ",{"text":53,"code":45},"DB_PWD",{"text":55}," variables are also reported, but the undefined service is the blocking error.",{"heading":57,"block":58},"What the log looks like",{"header":59,"lines":60},"Deploy log",[61,65,69,73],{"segments":62},[63],{"text":64},"Starting application (docker compose up -d)",{"segments":66},[67],{"text":68},"time=\"2026-09-10T21:49:23Z\" level=warning msg=\"The \\\"ACME_EMAIL\\\" variable is not set. Defaulting to a blank string.\"",{"segments":70},[71],{"text":72},"time=\"2026-09-10T21:49:23Z\" level=warning msg=\"The \\\"DB_PWD\\\" variable is not set. Defaulting to a blank string.\"",{"segments":74},[75],{"text":76},"service \"app\" depends on undefined service \"traefik\": invalid compose project",{"heading":78,"steps":79,"block":83},"How to fix it",[80],[81],{"text":82},"Fixed in engine 2.1.0. The same repository deploys past this point on engine 2.1.0; this failure no longer occurs. Redeploy the project.",{"header":84,"lines":85},"Fix by hand",[],{"heading":87,"body":88,"block":91},"How PanelAlpha Engine solves it",[89],{"text":90},"Not reproduced on engine 2.1.0 (commit 133832712): redeployed codeberg.org\u002Fladigitale\u002Fdigistorm (partial) on the engine test hosts on 2026-09-30; no new event on this fingerprint.",{"header":92,"lines":93},"",[],{"heading":95,"items":96},"Apps affected",[97],{"title":98,"badge":99,"tone":26,"href":100},"digistorm","1 occurrence","\u002Fapps\u002Fcodeberg.org\u002Fladigitale\u002Fdigistorm",{"heading":102,"body":103,"footNote":104,"docsLabel":105,"docsHref":106},"Try PanelAlpha Engine yourself.","The easiest way to turn your server into a safe, controlled environment for your AI agent. Deploy, manage and maintain any project from Claude Code, Cursor, Codex or any other MCP client. Open source under Apache 2.0, free to run.","Requires Ubuntu 24.04 or 26.04 · 2 GB RAM · 1 CPU","Read the documentation","https:\u002F\u002Fpanelalpha.com\u002Fdocs"]