{"record":{"id":"0ea0deb024cd771a","repo":"vxcontrol/pentagi","slug":"failed-to-get-coder-handler-w","errorCode":null,"errorMessage":"failed to get coder handler: %w","messagePattern":"failed to get coder handler: %w","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"backend/pkg/providers/assistant.go","lineNumber":171,"sourceCode":"\t\treturn fmt.Errorf(\"failed to get primary agent msg chain %d: %w\", ap.msgChainID, err)\n\t}\n\n\tvar chain []llms.MessageContent\n\tif err := json.Unmarshal(msgChain.Chain, &chain); err != nil {\n\t\tlogger.WithError(err).Error(\"failed to unmarshal primary agent msg chain\")\n\t\treturn fmt.Errorf(\"failed to unmarshal primary agent msg chain %d: %w\", ap.msgChainID, err)\n\t}\n\n\tadviser, err := ap.fp.GetAskAdviceHandler(ctx, nil, nil)\n\tif err != nil {\n\t\tlogger.WithError(err).Error(\"failed to get ask advice handler\")\n\t\treturn fmt.Errorf(\"failed to get ask advice handler: %w\", err)\n\t}\n\n\tcoder, err := ap.fp.GetCoderHandler(ctx, nil, nil)\n\tif err != nil {\n\t\tlogger.WithError(err).Error(\"failed to get coder handler\")\n\t\treturn fmt.Errorf(\"failed to get coder handler: %w\", err)\n\t}\n\n\tinstaller, err := ap.fp.GetInstallerHandler(ctx, nil, nil)\n\tif err != nil {\n\t\tlogger.WithError(err).Error(\"failed to get installer handler\")\n\t\treturn fmt.Errorf(\"failed to get installer handler: %w\", err)\n\t}\n\n\tmemorist, err := ap.fp.GetMemoristHandler(ctx, nil, nil)\n\tif err != nil {\n\t\tlogger.WithError(err).Error(\"failed to get memorist handler\")\n\t\treturn fmt.Errorf(\"failed to get memorist handler: %w\", err)\n\t}\n\n\tpentester, err := ap.fp.GetPentesterHandler(ctx, nil, nil)\n\tif err != nil {\n\t\tlogger.WithError(err).Error(\"failed to get pentester handler\")\n\t\treturn fmt.Errorf(\"failed to get pentester handler: %w\", err)","sourceCodeStart":153,"sourceCodeEnd":189,"githubUrl":"https://github.com/vxcontrol/pentagi/blob/ea665308baaff015b226f308438a68d929d0f29b/backend/pkg/providers/assistant.go#L153-L189","documentation":"Wraps a failure from fp.GetCoderHandler during assistant worker setup (backend/pkg/providers/assistant.go). The coder (developer agent) LLM handler could not be constructed, typically because the configured primary LLM provider is unavailable or misconfigured. The assistant worker cannot start without it.","triggerScenarios":"Coder handler construction fails: Docker sandbox client cannot initialize, required tool configuration/env missing, or underlying DB/template lookups error.","commonSituations":"Docker socket inaccessible (permission denied on /var/run/docker.sock); DOCKER_HOST misconfigured; missing env config for coding tools; fresh deployment with incomplete .env.","solutions":["Check Docker availability: `docker ps` from inside the backend container and verify /var/run/docker.sock is mounted/permissioned.","Set required tool env vars and restart the backend.","Inspect the wrapped error in logs to identify the failing sub-tool.","Run the installer wizard to complete tool configuration."],"exampleFix":"// before\ncoder, err := ap.fp.GetCoderHandler(ctx, nil, nil)\nif err != nil {\n    return fmt.Errorf(\"failed to get coder handler: %w\", err)\n}\n// after\ncoder, err := ap.fp.GetCoderHandler(ctx, &taskID, &subtaskID)\nif err != nil {\n    logger.WithError(err).Error(\"coder handler init failed — check docker socket & tool env\")\n    return fmt.Errorf(\"failed to get coder handler: %w\", err)\n}","handlingStrategy":"validation","validationCode":"cli, err := client.NewClientWithOpts(client.FromEnv, client.WithAPIVersionNegotiation())\nif err != nil { return fmt.Errorf(\"docker unavailable for coder handler: %w\", err) }\n_ = cli","typeGuard":null,"tryCatchPattern":"coder, err := ap.fp.GetCoderHandler(ctx, nil, nil)\nif err != nil {\n    logger.WithError(err).Error(\"coder handler init failed — check docker\")\n    return fmt.Errorf(\"failed to get coder handler: %w\", err)\n}","preventionTips":["Verify `docker ps` works inside the backend container","Check /var/run/docker.sock ownership (998:998 or root)","Pre-pull the sandbox coding image","Set DOCKER_HOST explicitly in remote deployments"],"tags":["docker","tools","handler-init"],"backgroundTag":"tool-handler-init-failed","analyzedSha":"ea665308baaff015b226f308438a68d929d0f29b","analyzedAt":"2026-09-01T14:16:31.421Z","contentChangedAt":null,"schemaVersion":2},"datasetVersion":"2026-09-08T10:18:20.063Z"}