Fatal error: Could not extract a stage height from the CSS. Traced height: 0px

Do you set width for .galleria-container in your css or in Galleria settings?

I have the same problem.

Setting a hard value for the width of .galleria-container is not a good practice if you need the gallery to be responsive.
And setting the width to auto or inherit doesn't resolve this issue.

Any idea how to fix this?

interested in this too.
in the setting it says

You should use this option to set a gallery width manually. By default, Galleria fetches the width from the containing element which requires special Drupal theme support.

what exactly does the theme support for it to work :)

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i had some problem here too. in my case it was a theme specific style. its often a problem.

+1

+1

See #1613088: Could not extract a stage height from the CSS, it has a working patch.

Forgot to add something