{"record":{"id":"52a6efc26f90caaf","repo":"plandex-ai/plandex","slug":"validation-loop-failed-s","errorCode":null,"errorMessage":"validation loop failed: %s","messagePattern":"validation loop failed: (.+?)","errorType":"http","errorClass":null,"httpStatus":500,"severity":"warning","filePath":"app/server/model/plan/build_race.go","lineNumber":266,"sourceCode":"\n\t\tfileState.builderRun.AutoApplyValidationFinishedAt = time.Now()\n\n\t\tif err != nil {\n\t\t\tif errors.Is(err, context.Canceled) {\n\t\t\t\tlog.Printf(\"Context canceled during buildValidate\")\n\t\t\t\treturn\n\t\t\t}\n\n\t\t\tlog.Printf(\"buildRace - validation loop failed: %v\", err)\n\t\t\tsendErr(fmt.Errorf(\"error building validate loop: %w\", err))\n\t\t} else {\n\t\t\tlog.Printf(\"buildRace - validation loop finished, valid: %v\", validateResult.valid)\n\t\t\tif validateResult.valid {\n\t\t\t\tlog.Printf(\"buildRace - validation loop succeeded, valid: %v\", validateResult.valid)\n\t\t\t\tsendRes(raceResult{content: validateResult.updated, valid: validateResult.valid})\n\t\t\t} else {\n\t\t\t\tlog.Printf(\"buildRace - validation loop failed, valid: %v\", validateResult.valid)\n\t\t\t\tsendErr(fmt.Errorf(\"validation loop failed: %s\", validateResult.problem))\n\t\t\t}\n\t\t}\n\t}()\n\n\terrs := []error{}\n\terrChNumReceived := 0\n\n\tfor {\n\t\tselect {\n\t\tcase <-buildCtx.Done():\n\t\t\tlog.Printf(\"buildRace - context canceled\")\n\t\t\treturn raceResult{}, buildCtx.Err()\n\t\tcase err := <-errCh:\n\t\t\terrChNumReceived++\n\t\t\tlog.Printf(\"buildRace - error channel received %d: %v\\n\", errChNumReceived, err)\n\n\t\t\tif err != nil {\n\t\t\t\terrs = append(errs, err)","sourceCodeStart":248,"sourceCodeEnd":284,"githubUrl":"https://github.com/plandex-ai/plandex/blob/e2d772072efadbe41d2946d97d79be55532dbab5/app/server/model/plan/build_race.go#L248-L284","documentation":"This error is raised when buildValidateLoop completes without error but reports the proposed content as invalid (validateResult.valid == false). The loop's human-readable reason for rejection (validateResult.problem) is included so the caller knows why the auto-apply edits did not validate.","triggerScenarios":"buildValidateLoop finishes successfully but its validation step rejects the proposed edits — validateResult.valid is false with a populated validateResult.problem (e.g. edits don't apply cleanly, syntax errors remain, or the LLM validator deems the result wrong).","commonSituations":"Model output produced edits that conflict with the current file, replacement markers didn't match, or residual syntax errors after applying the proposed changes during auto-apply.","solutions":["Read validateResult.problem in the error text to see the specific rejection reason","Retry the build so the model regenerates edits (this is a content problem, not infrastructure)","Fall back to a whole-file build (buildRace already starts fallbacks, but a manual re-run with more context helps)","Provide clearer desc/reasons context so the model produces applicable edits"],"exampleFix":"// before\nres, err := fileState.buildRace(...)\napplyEdits(res.content)\n// after\nres, err := fileState.buildRace(...)\nif err != nil && strings.Contains(err.Error(), \"validation loop failed\") {\n    log.Printf(\"proposed edits invalid, regenerating: %v\", err)\n    res, err = fileState.buildRace(...) // regenerate\n}\napplyEdits(res.content)","handlingStrategy":"fallback","validationCode":"if validateResult == nil {\n    return fmt.Errorf(\"no validation result produced\")\n}\nif !validateResult.valid && validateResult.problem == \"\" {\n    return fmt.Errorf(\"validation rejected edits without a reason\")\n}","typeGuard":"func isValidatedResult(r *buildValidateLoopResult) bool {\n    return r != nil && r.valid && r.updated != \"\"\n}","tryCatchPattern":"res, err := fileState.buildRace(...)\nif err != nil {\n    if strings.Contains(err.Error(), \"validation loop failed:\") {\n        log.Printf(\"edits rejected: %s — falling back to whole-file build\", err)\n        return startWholeFileBuild(\"\")\n    }\n    return err\n}","preventionTips":["Check the problem text in the error to fix the specific edit-generation issue","Fall back to a whole-file build when replacements repeatedly fail validation","Ensure edit markers strictly match current file content before applying","Regenerate rather than applying known-invalid proposed content"],"tags":["go","validation","auto-apply","llm"],"backgroundTag":"validation-loop-failed","analyzedSha":"e2d772072efadbe41d2946d97d79be55532dbab5","analyzedAt":"2026-09-05T20:56:53.631Z","contentChangedAt":"2026-09-05T20:56:53.631Z","schemaVersion":2},"datasetVersion":"2026-09-12T22:17:10.623Z"}