plandex-ai/plandex · error

failed to build plan: %v

Error message

failed to build plan: %v

What it means

After loading context, if conflicts were detected MustLoadContext calls buildPlanInlineFn to start a build; any error from that build is wrapped with this message. It means the automatic build triggered by context conflicts failed. The user's context was loaded, but the conflict-resolution build did not start or errored.

Source

Thrown at app/cli/lib/context_load.go:737

	}

	var res *shared.LoadContextResponse
	if cachedMapLoadRes != nil {
		res = cachedMapLoadRes
	} else {
		res, apiErr = api.Client.LoadContext(CurrentPlanId, CurrentBranch, loadContextReq)
		if apiErr != nil {
			onErr(fmt.Errorf("failed to load context: %v", apiErr.Msg))
		}
	}

	term.StopSpinner()

	if hasConflicts {
		term.StartSpinner("🏗️  Starting build...")
		_, err := buildPlanInlineFn(false, nil)
		if err != nil {
			onErr(fmt.Errorf("failed to build plan: %v", err))
		}
		fmt.Println()
	}

	fmt.Println("✅ " + res.Msg)

	if len(alreadyLoadedByComposite) > 0 {
		printAlreadyLoadedMsg(alreadyLoadedByComposite)
	}

	if len(ignoredPaths) > 0 && !params.SkipIgnoreWarning {
		printIgnoredMsg()
	}

	if len(filesSkippedTooLarge) > 0 || len(filesSkippedAfterSizeLimit) > 0 ||
		len(mapFilesTruncatedTooLarge) > 0 || len(mapFilesSkippedAfterSizeLimit) > 0 {
		printSkippedFilesMsg(filesSkippedTooLarge, filesSkippedAfterSizeLimit,
			mapFilesTruncatedTooLarge, mapFilesSkippedAfterSizeLimit)

View on GitHub (pinned to e2d772072e)

Solutions

1. Read the wrapped %v to see why the build failed
2. Retry the build manually with the build/apply command once the plan state is settled
3. Resolve the conflicting context entries (unload duplicates/old versions) and rebuild

Example fix

// before
_, err := buildPlanInlineFn(false, nil)
if err != nil {
    onErr(fmt.Errorf("failed to build plan: %v", err))
}
// after — fall back to telling the user to build manually
_, err := buildPlanInlineFn(false, nil)
if err != nil {
    fmt.Printf("⚠️  auto-build failed (%v); run the build command manually to resolve conflicts\n", err)
}

if hasConflicts && planArchived {
    return fmt.Errorf("cannot auto-build archived plan; resolve conflicts manually")
}

_, err := buildPlanInlineFn(false, nil)
if err != nil {
    fmt.Printf("auto-build failed: %v — resolve conflicts and build manually\n", err)
    // do not crash the whole load; context is already loaded
}

When it happens

Trigger: hasConflicts is true after load and buildPlanInlineFn(false, nil) returns an error — server build failure, invalid model/plan state, or API error during build creation.

Common situations: Conflicting context versions on the branch; plan in a state that cannot accept builds (archived, another build running); insufficient credits or plan limits reached.

Related errors

• failed to build plan: %v
• context timeout
• failed to check context conflicts: %v
• failed to load context: %v
• failed to list context: %s

AI-assisted analysis of plandex-ai/plandex@e2d772072e (2026-09-05). Data as JSON: /api/errors/d45185b738e72934. Report an issue: GitHub.