Drupal 8.x

I have several sites that I want update.
I'm updating the first one.
This has ZURB Foundation 6 8.x-6.0-alpha6 theme installed and it has subtheme.
It has some overriden html.twig files and css and js code to customize the subtheme.

I used the command "npm start" en th subtheme directory and it shows this error:

I want to hide a block under certain conditions. The code works, but only if I flush the caches after the condition changes. I guess I have to do something with the cachablity of the block, but I'm not sure how. Any ideas?

Here's the code:

Hello!

in a really short time, my cache exceeds the db limit.

For example, now it took just 2 hours and the cache_dynamic_page_cache growd to 363,8 MB, the cache_page to 334,2 MB and the cache_render to 162,3 MB. So the site is down.

After some optimization the module database optimization says "The size of all tables in the database: 230.69 MB.". The provider backend tells "317 of 1024 MB in use".

So there is a difference.

What could be the reason and how can I solve this one?

Hello,

I am trying to create a nested accordion from content titles.

Is there a module or a technique that I can use / follow?

Thanks in advance

Christoforos

Hello,

Last month I built a D8 site for attendance registration to children's activities. We need to control the maximum number of children coming to our summer activities (due to some virus). In the past we did not have an upper limit on attendance so we did not need a registration site.

I need to know if we should expect scalability issues with current setup. Content, Views and Modules are listed below. No optimization has been done AFAIK.

If we should expect long load times of pages/views (>5s), we would consider seeking expert help :-)