Jekyll Build Error Using 2.6.2 Ruby Version

Hi guys, I’ve created my blog using jekyll.
the .ruby-version before was using 2.4.3

After I added features like jekyll-admin & netlify-dashboard, cloudinary, and more, it now using 2.6.2 ruby-version.

of course, I can run this project on my local machine smoothly, but when try to ship it with netlify using 2.6.2 ruby-version, there is an error. As you can see in this attachment.

I’ve tried to change to the previous version which is 2.4.3 but still get the same error.

What do I miss here?

Have you seen this topic?