eyaltoledano/claude-task-master · error

Failed to fetch tasks from any tag. First error: ${failedTag

Error message

Failed to fetch tasks from any tag. First error: ${failedTags[0].error}

What it means

createTagFromBranch requires branchName to be a non-empty string before attempting to convert it into a tag name. Passing nothing, an empty string, or a non-string (null/number/object) fails this guard.

Source

Thrown at apps/cli/src/commands/list.command.ts:449

		// Warn about failed tags
		if (failedTags.length > 0) {
			console.warn(
				chalk.yellow(
					`\nWarning: Could not fetch tasks from ${failedTags.length} tag(s):`
				)
			);
			failedTags.forEach(({ name, error }) => {
				console.warn(chalk.gray(`  ${name}: ${error}`));
			});
		}

		// If ALL tags failed, throw to surface the issue
		if (
			failedTags.length === tagsResult.tags.length &&
			tagsResult.tags.length > 0
		) {
			throw new Error(
				`Failed to fetch tasks from any tag. First error: ${failedTags[0].error}`
			);
		}

		// Apply additional filters
		let filteredTasks: TaskWithTag[] = allTaggedTasks;

		// Apply blocking filter if specified
		if (options.blocking) {
			filteredTasks = filteredTasks.filter((task) => task.blocks.length > 0);
		}

		// Apply status filter if specified
		if (options.status && options.status !== 'all') {
			const statusValues = options.status
				.split(',')
				.map((s) => s.trim() as TaskStatus);
			filteredTasks = filteredTasks.filter((task) =>

View on GitHub (pinned to c0c98d367c)

Solutions

1. Ensure a branch name string is passed: createTagFromBranch(tasksPath, 'feature/x', ...)
2. Resolve the current branch with `git branch --show-current` and check it is non-empty first
3. Coerce/trim user input and reject empty values before calling

Example fix

// before
const branch = execSync('git branch --show-current').toString(); // detached HEAD => ''
await createTagFromBranch(tasksPath, branch);
// after
const branch = execSync('git branch --show-current').toString().trim();
if (!branch) throw new Error('Not on a branch (detached HEAD)');
await createTagFromBranch(tasksPath, branch);

if (typeof branchName !== 'string' || !branchName.trim()) {
  throw new Error('branchName must be a non-empty string');
}

const isNonEmptyString = (v: unknown): v is string => typeof v === 'string' && v.trim().length > 0;

try {
  await createTagFromBranch(tasksPath, branchName);
} catch (e) {
  if (e.message.includes('Branch name is required')) {
    throw new Error('Provide a branch name, e.g. task-master create-tag-from-branch feature/x');
  }
  throw e;
}

When it happens

Trigger: Calling createTagFromBranch(tasksPath, branchName, ...) with branchName undefined, '', or a non-string value, e.g. from unparseable git branch command output.

Common situations: Scripting where `git branch --show-current` returned empty (detached HEAD); passing an undefined process.argv value; wiring a UI field that was never filled in.

Understand the failure class

Background: "missing required argument" and "the following required arguments were not provided": what required-argument errors mean and how to fix them — this error's family across 20 libraries.

Related errors

• ${authCheck.error}
• MFA_VERIFICATION_FAILED
• Failed to initialize services: ${(error as Error).message}
• Invalid format: ${options.format}. Valid formats are: text,
• Project path is required

AI-assisted analysis of eyaltoledano/claude-task-master@c0c98d367c (2026-08-29). Data as JSON: /api/errors/bdfd98cd53f119e4. Report an issue: GitHub.