English translation:

When using Piwik on an IIS server in a shared hosting environment, defective CSS files are created, which make the use of Piwik almost impossible.
This is because the Asset Manager cannot resolve the @import paths if piwik does not have the read right for all elements in the path. But this is typically the case in a shared hosting environment.

In our case, the path was as follows:
":/FTP/CustNo/domain/web/piwik/plugins/..."
(The drive letter is missing at the beginning)

As a workaround, we have inserted in the StylesheetUIAssetMerger class in the getCssPathsRewrite function:
$publicPath = str_replace (':/FTP/CustNo/domain/web/piwik/','', $publicPath);

It would be nice if this bug could be removed in the next release.
Thank you so much!

Hi,

I'm still trying to understand this problem but I'm not really sure if I understand it. I made a change which could help but probably not. Have you replaced $public_path rather at the beginning or at the very end? I do not really understand why this variable should contain the whole path at all. Maybe someone else wants to have a look as well?

If I understand the code correct $public_path should only contain a relative path such as plugins/PluginName/images/file.gif.

Closing this issue for now. It might be fixed but I cannot tell for sure without the help of the creator of the issue. Please reopen at any time in case it is not fixed