My whole hikashop shows in text. How to fix this?

Hi everyone,

When I press "Add category" or "Add product", everything seems to crash and the whole hikashop shows in text form.

I have the latest PHP version, latest Joomla version. Ran error checks but I found absolutely nothing what is wrong.
I really hope someone on this forum will be able to help me.

In the attachement you will be able to see what shows up when I press "Add category".

Hello,

Can you :
- Activate the Joomla debug mode ("Administration->Global configuration->System->Debug System/Language")
- Set the "error reporting" option of the Joomla configuration to "maximum"
- Test it again so that we can see if it display an error message which will help us to understand from what your issue is coming.

Thank you.