Try setting the basePath for next.js, and see if that helps. #8

	name: Deploy Next.js site to GitHub Pages

	on:
	push:
	branches:
	- main
	- nextjs

	workflow_dispatch:

	permissions:
	contents: read
	pages: write
	id-token: write

	concurrency:
	group: "pages"
	cancel-in-progress: false

	jobs:
	build:
	defaults:
	run:
	working-directory: src

	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v4

	- name: Install pnpm
	uses: pnpm/action-setup@v4
	with:
	version: 10
	run_install: false

	- name: Install Node.js
	uses: actions/setup-node@v4
	with:
	node-version: 22
	cache: 'pnpm'
	cache-dependency-path: '**/pnpm-lock.yaml'

	- name: Install dependencies
	run: pnpm install

	- name: Setup Github Pages
	id: setup_pages
	uses: actions/configure-pages@v5
	with:
	static_site_generator: next

	- name: Restore cache
	uses: actions/cache@v4
	with:
	path: \|
	.next/cache
	key: ${{ runner.os }}-nextjs-${{ hashFiles('/pnpm-lock.yaml') }}-${{ hashFiles('.[jt]s', '**.[jt]sx') }}}}
	restore-keys: \|
	${{ runner.os }}-nextjs-${{ hashFiles('**/pnpm-lock.yaml') }}-

	- name: Build with Next.js
	run: pnpm run build
	env:
	PAGES_BASE_PATH: ${{ steps.setup_pages.outputs.base_path }}

	- name: Upload artifact
	uses: actions/upload-pages-artifact@v3
	with:
	path: src/out

	deploy:
	environment:
	name: github-pages
	url: ${{ steps.deployment.outputs.page_url }}
	runs-on: ubuntu-latest
	needs: build
	steps:
	- name: Deploy to Github Pages
	id: deployment
	uses: actions/deploy-pages@v4

Provide feedback