UI Theme Designer produce CSS Compilation Error

[Former Member]

I am trying to edit a Fiori Launchpad out of the portal when i creat the Theme it gives me that error message (German)

bildschirmfoto-2018-04-04-um-001330-2.png

Translated to English:

There was an error compiling the CSS files used by the current preview. This may be due to a particular CSS file. To solve the problem, check the parameters and the custom CSS file. You will find all the parameters in the "Expert" tab when you select the delta filter (triangle icon).

bildschirmfoto-2018-04-05-um-002851.png

[tanushsingh_parihar]

Hi Lukas,

Does the error appear for all base themes or only when using SAP Belize as seen in the screenshot?

What is the UI5 version of the portal site for which you are trying to customize the theme and what is the UI5 version in which UI THD has been opened?

If there's any custom css that has been added to the them then please remove it and check if building a theme is possible.