not finding the content

[ObedVega]

Hello i have to sites with this feature.

One works perfectly after compiling all the files into html.

The other is just a site with static html file, doesnt compile nothing and these are the settings:
name: Deploy PR previews
on:
push:
branches:
- main
pull_request:
types:
- opened
- synchronize
jobs:
deploy-preview:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v3
- name: Deploy PR Preview
uses: rossjrw/pr-preview-action@v1.4.3
with:
token: ${{ secrets.GITHUB_TOKEN }}
preview-branch: gh-pages
source-dir: .
umbrella-dir: pr-preview
action: auto

     *When open the PR it provides a link with my preview but that preview is empty, does anyone knows how to fix it or maybe im putting the wrong source-dir?
     
     Any help is well appreaciated.
     Thanks.