plandex-ai/plandex · error

failed to read %s: %w

Error message

failed to read %s: %w

What it means

During rewind conflict analysis, os.ReadFile fails on a project file on disk (dstPath) and the error is NOT os.IsNotExist. Excludes the benign deleted-file case; signals genuine read failure (permissions, I/O) that aborts the analysis.

Source

Thrown at app/cli/lib/rewind.go:190

			}

			// Get the actual file content from disk
			dstPath := filepath.Join(fs.ProjectRoot, path)
			diskContent, err := os.ReadFile(dstPath)
			if err != nil {
				if os.IsNotExist(err) {
					// If file doesn't exist on disk and current state has no content,
					// there's no conflict
					if currentContent == "" {
						return
					}
					// Otherwise it's a conflict because file was deleted
					mu.Lock()
					conflicts[path] = true
					mu.Unlock()
					return
				}
				outErr = fmt.Errorf("failed to read %s: %w", path, err)
				return
			}

			// If disk content differs from current plan state, we have a conflict
			if string(diskContent) != currentContent {
				mu.Lock()
				conflicts[path] = true
				mu.Unlock()
			}
		}(path)
	}

	// Collect any errors from goroutines
	for i := 0; i < len(requiredChanges); i++ {
		if err := <-errCh; err != nil {
			return nil, err
		}
	}

View on GitHub (pinned to e2d772072e)

Solutions

1. Check the wrapped error — likely permissions or I/O on the project file
2. Ensure the process can read all files under ProjectRoot
3. Fix or remove the unreadable file, then retry the rewind

When it happens

Trigger: Thrown at app/cli/lib/rewind.go:190 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of plandex-ai/plandex@e2d772072e (2026-09-05). Data as JSON: /api/errors/a5564e198443c6f2. Report an issue: GitHub.