[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"problem-detail-warning-sveltekit-app-restarts-because-a-startup-path-is":3},{"stack":4,"error":5,"seoName":6,"seoStack":7,"seo":8,"breadcrumb":10,"titlePrefix":17,"titleAccent":18,"lead":19,"facts":22,"why":37,"log":47,"fix":88,"engine":105,"related":113,"pitch":121},"sveltekit","sveltekit-app-restarts-because-a-startup-path-is","SvelteKit app restarts because a startup path is undefined","Sveltekit",{"description":9},"The application started but did not answer on any port it publishes. The deploy log has the per-port result; a worker or queue-only app can ignore this. | The a",[11,14,16],{"label":12,"href":13},"App Installations","\u002Fapps",{"label":7,"href":15},"\u002Fapps\u002Fstacks\u002Fsveltekit",{"label":6},"SvelteKit app restarts because ","a startup path is undefined",[20],{"text":21},"The application started but did not answer on any port it publishes. The deploy log has the per-port result; a worker or queue-only app can ignore this. | The application is restarting, not running. Docker reports app (Restarting (1) 30 seconds ago). Nothing answered on any published port because the process keeps exiting. Read the container output with container_service_logs; the reason it exits is there.",[23,28,31,33],{"label":24,"value":25,"tone":26,"tooltip":27},"Type","Warning","warn","An issue PanelAlpha Engine catches around a deploy that does not break it. It tells you, before or after, that you may need to do something.",{"label":29,"value":30},"Seen","1 times",{"label":32,"value":7},"Where",{"label":34,"value":35,"tooltip":36},"Status","Observed","Our team will look into this soon, verify the cause and try to fix it in an upcoming release.",{"heading":38,"body":39},"Why it happens",[40,42,45],{"text":41},"The build completed, but the SvelteKit server crashes during startup in a server hook. Its startup code passes an undefined value to ",{"text":43,"code":44},"path.join",true,{"text":46},", likely because a required environment variable or configuration path is missing. The container then restarts continuously, so port 3000 never becomes available.",{"heading":48,"block":49},"What the log looks like",{"header":50,"lines":51},"Deploy log",[52,56,60,64,68,72,76,80,84],{"segments":53},[54],{"text":55},"Application compiled",{"segments":57},[58],{"text":59},"Starting application (docker compose up -d)",{"segments":61},[62],{"text":63},"Health check: http:\u002F\u002F[ip]:3000\u002F did not answer — Failed to connect",{"segments":65},[66],{"text":67},"TypeError [ERR_INVALID_ARG_TYPE]: The \"path\" argument must be of type string. Received undefined",{"segments":69},[70],{"text":71},"    at Object.join (node:path:1305:7)",{"segments":73},[74],{"text":75},"    at onServerStartup (...\u002Fhooks.server.js:87:26)",{"segments":77},[78],{"text":79},"Node.js v20.20.2",{"segments":81},[82],{"text":83},"app-1 ... [panelalpha] start: serve",{"segments":85},[86],{"text":87},"app-1 ... Docker reports app (Restarting (1))",{"heading":89,"steps":90,"block":102},"How to fix it",[91],[92,94,96,98,100],{"text":93},"Inspect ",{"text":95,"code":44},"hooks.server",{"text":97}," and the ",{"text":99,"code":44},"onServerStartup",{"text":101}," code around the reported stack location. Identify the missing path value and provide the required environment variable, secret, or mounted file through the deployment configuration and Docker Compose environment. Rebuild and redeploy, then verify that the container remains running and answers on port 3000.",{"header":103,"lines":104},"Fix by hand",[],{"heading":106,"body":107,"block":110},"How PanelAlpha Engine solves it",[108],{"text":109},"The Engine could surface the container crash as the primary failure instead of reporting only an unknown health result. It could also identify the failing server hook and suggest checking missing environment variables or mounted paths.",{"header":111,"lines":112},"",[],{"heading":114,"items":115},"Apps affected",[116],{"title":117,"badge":118,"tone":119,"href":120},"cogsend","1 occurrence","err","\u002Fapps\u002Fdeepakness\u002Fcogsend",{"heading":122,"body":123,"footNote":124,"docsLabel":125,"docsHref":126},"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"]