Hi there! Its not the first time error appearing when trying to use "Image Container" and "Revealable Panel" modules and I don't see ways to set it right.  I think it would be great to have more PDF tutorials (or usage samples) in zenar.io/user-guides. May be I don't really understand how basically in should be used?  Actually there are numerous modules (in CMS core) to add functionality to websites but lack of documentation (or just few examples to see) on their usage, it would be great to have some more tutorials (as a quick reference).

By the way, currently I'm using linux debian based distribution ( although I don't think it may affect) and XAMPP

Hi Jonny

I'm afraid it looks like it is your distro (or at least the copy of Apache in your distro) that's the problem.

Zenario is designed to be multilingual and runs using UTF. It needs Apache to be compiled with support for UTF to work.

Could I ask that you use a copy of Apache with UTF support and see if the error still happens..?