Creating Pages deployment failed

HttpError: Not Found at /home/runner/work/_actions/actions/deploy-pages/v2/webpack:/deploy-pages/node_modules/@octokit/request/dist-node/index.js:86:1 at processTicksAndRejections (node:internal/process/task_queues:96:5) at createPagesDeployment (/home/runner/work/_actions/actions/deploy-pages/v2/webpack:/deploy-pages/src/internal/api-client.js:126:1) at Deployment.create (/home/runner/work/_actions/actions/deploy-pages/v2/webpack:/deploy-pages/src/internal/deployment.js:80:1) at main (/home/runner/work/_actions/actions/deploy-pages/v2/webpack:/deploy-pages/src/index.js:30:1)

Error: Failed to create deployment (status: 404) with build version 2fbfe90da82102523729328fe24039ea501fc9f2. Ensure GitHub Pages has been enabled: https://github.com/keisuke-umezawa/optuna-dashboard/settings/pages

The following actions uses node12 which is deprecated and will be forced to run on node16: actions/setup-node@v2. For more info: https://github.blog/changelog/2023-06-13-github-actions-all-actions-will-run-on-node16-instead-of-node12-by-default/