nx run-many fails with: Failed to convert JavaScript value `Undefined` into rust type `String`

[jvskriubakken]

Current Behavior

After nx is finished running build on each project, instead of presenting the summary it fails with the message:

NX   Failed to convert JavaScript value `Undefined` into rust type `String`

Pass --verbose to see the stacktrace.

Expected Behavior

That nx presents the summary

GitHub Repo

No response

Steps to Reproduce

Happens every time.

Nx Report

Node           : 24.6.0
OS             : darwin-arm64
Native Target  : aarch64-macos
pnpm           : 10.14.0

nx (global)        : 21.5.0
nx                 : 21.5.1
@nx/js             : 21.5.1
@nx/eslint         : 21.5.1
@nx/workspace      : 21.5.1
@nx/devkit         : 21.5.1
@nx/eslint-plugin  : 21.5.1
@nx/gradle         : 21.5.1
@nx/playwright     : 21.5.1
@nx/plugin         : 21.5.1
@nx/react          : 21.5.1
@nx/storybook      : 21.5.1
@nx/vite           : 21.5.1
@nx/web            : 21.5.1
typescript         : 5.9.2
---------------------------------------
Registered Plugins:
nx-tools-azure
nx-tools-chimney-insights
nx-tools-i18next
nx-tools-sentry
@nx/eslint/plugin
@nx-dotnet/core
@nx/storybook/plugin
@nx/vite/plugin
@nx/playwright/plugin
---------------------------------------
Community plugins:
@nx-dotnet/core : 3.0.2
---------------------------------------
Local workspace plugins:
nx-tools-chimney-insights
nx-tools-i18next
nx-tools-sentry
nx-tools-azure
---------------------------------------
Cache Usage: 198.89 KB / 92.64 GB

Failure Logs

nx run-many -t build --verbose

 NX   Failed to convert JavaScript value `Undefined` into rust type `String`

Error: Failed to convert JavaScript value `Undefined` into rust type `String`
    at CompositeLifeCycle.appendTaskOutput (/Users/jvs/Code/Firefly3/node_modules/.pnpm/[email protected]_@[email protected]_@[email protected]_@[email protected]__@[email protected]._d6493b8718eaaded17f5ce0ac19c4f98/node_modules/nx/src/tasks-runner/life-cycle.js:87:19)
    at CompositeLifeCycle.appendTaskOutput (/Users/jvs/Code/Firefly3/node_modules/.pnpm/[email protected]_@[email protected]_@[email protected]_@[email protected]__@[email protected]._d6493b8718eaaded17f5ce0ac19c4f98/node_modules/nx/src/tasks-runner/life-cycle.js:87:19)
    at CompositeLifeCycle.appendTaskOutput (/Users/jvs/Code/Firefly3/node_modules/.pnpm/[email protected]_@[email protected]_@[email protected]_@[email protected]__@[email protected]._d6493b8718eaaded17f5ce0ac19c4f98/node_modules/nx/src/tasks-runner/life-cycle.js:87:19)
    at /Users/jvs/Code/Firefly3/node_modules/.pnpm/[email protected]_@[email protected]_@[email protected]_@[email protected]__@[email protected]._d6493b8718eaaded17f5ce0ac19c4f98/node_modules/nx/src/tasks-runner/task-orchestrator.js:411:48
    at NoopChildProcess.onOutput (/Users/jvs/Code/Firefly3/node_modules/.pnpm/[email protected]_@[email protected]_@[email protected]_@[email protected]__@[email protected]._d6493b8718eaaded17f5ce0ac19c4f98/node_modules/nx/src/tasks-runner/running-tasks/noop-child-process.js:19:9)
    at TaskOrchestrator.runTask (/Users/jvs/Code/Firefly3/node_modules/.pnpm/[email protected]_@[email protected]_@[email protected]_@[email protected]__@[email protected]._d6493b8718eaaded17f5ce0ac19c4f98/node_modules/nx/src/tasks-runner/task-orchestrator.js:410:33)
    at process.processTicksAndRejections (node:internal/process/task_queues:105:5)
    at async TaskOrchestrator.applyFromCacheOrRunTask (/Users/jvs/Code/Firefly3/node_modules/.pnpm/[email protected]_@[email protected]_@[email protected]_@[email protected]__@[email protected]._d6493b8718eaaded17f5ce0ac19c4f98/node_modules/nx/src/tasks-runner/task-orchestrator.js:291:34)
    at async TaskOrchestrator.executeNextBatchOfTasksUsingTaskSchedule (/Users/jvs/Code/Firefly3/node_modules/.pnpm/[email protected]_@[email protected]_@[email protected]_@[email protected]__@[email protected]._d6493b8718eaaded17f5ce0ac19c4f98/node_modules/nx/src/tasks-runner/task-orchestrator.js:130:17)
    at async Promise.all (index 1)

Package Manager Version

No response

Operating System

• [x] macOS
• [ ] Linux
• [ ] Windows
• [ ] Other (Please specify)

Additional Information

No response