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Internal error during firebase deploy --only hosting with Next.js 15 #9879

@GScandelari

Description

@GScandelari

Environment info

  • firebase-tools version: latest (used in GitHub Actions)
  • Platform: GitHub Actions (ubuntu-latest)
  • Node version: 20
  • Next.js version: 15.5.9
  • Firebase SDK version: 11.1.0

Steps to reproduce

  1. Run firebase deploy --only hosting for a Next.js 15 project
  2. Build completes successfully
  3. Deploy fails at the final step

Expected behavior

Deploy should complete successfully.

Actual behavior

Deploy fails with:
Error: An Internal error has occurred. Please try again in a few minutes. If this error persists, please open an issue at https://github.com/firebase/firebase-tools

The error occurs after:
i functions: generating the service identity for pubsub.googleapis.com...
i functions: generating the service identity for eventarc.googleapis.com...

Additional context

  • The build phase completes successfully (74 static pages generated)
  • The error has persisted for several hours across multiple retry attempts
  • Previous deploys to the same project worked fine
  • The function being deployed is ssrcurvamestra (SSR for Next.js)

Full log output shows the deploy reaches the final stage before failing:
i functions: packaged .firebase/curva-mestra/functions (85.07 MB) for uploading
i functions: ensuring required API run.googleapis.com is enabled...
i functions: ensuring required API eventarc.googleapis.com is enabled...
i functions: ensuring required API pubsub.googleapis.com is enabled...
i functions: ensuring required API storage.googleapis.com is enabled...
✔ functions: required API eventarc.googleapis.com is enabled
✔ functions: required API storage.googleapis.com is enabled
✔ functions: required API pubsub.googleapis.com is enabled
✔ functions: required API run.googleapis.com is enabled
i functions: generating the service identity for pubsub.googleapis.com...
i functions: generating the service identity for eventarc.googleapis.com...

Error: An Internal error has occurred.

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