Question How to select the icons available in the editor ?

I don't know if I mentioned that before, in a previous post, as I don't see how to find them on this forum.
Helix is not listed with the templates, but only Folium, a Joomshaper template based on Helix Ultimate (2.0.7).
I made this extensions rebuild, and the search for updates. But nothing to update.
I noticed something : When I click Plugins/Helix Ultimate based template installer, I get :
An error occured.
500 The file TmplHelixUltimate.xml could not be found.

Maybe a lead ?

Last minute : After an update of the Joomla template Folium, I have no more icons in the Kunena Editor ... 

I think because the Template has been updated the setting change you think from this earlier question have done
needs to be redone  look at the last answer I thought it was going to work then.
3 maanden 1 week geleden #19
www.kunena.org/forum/k-5-2-support-archi...53-no-icons?start=10

The problem doesn't seem to be the same : the category icons I was talking about are there, but the editor icons are not.
In the template Crypsisb4/Features/Icons type, I have the choice between Fontawesome and Images-legacy. No icons at all in frontend for any selection. ... and no Fontawesome selection in the Joomla template.

I just noticed that I have the same problem (no CKeditor) on another site, using Helix3. On this site, Kunena/Crypsisb4/Features/Icons type, I can select Bootstrap 2, or 3, or 4, or Fontawesome, or Images Legacy. (but no Bootstrap selection on the first site).

yes that is correct is only with template : crypsisb3 or template : crypsis.
But can  you possibly go back to before you updated the Template today.
Because it's strange that you suddenly don't see those editor icons anymore

The templates crypsis and crypsisb3 gives very bad displays, and error messages with debug on.
But the menu CKeditor or BBcode are back, only when I change the Joomla configuration on "Debug mode" !
I have no idea why.
And, anyway :

• The main problem is still there : The icons of CKeditor work but are all displayed.
• Even on BBcode, on which I can select the icons to display, most of the icons don't work.

can you check if your template is Templates: Customize
here you have this file " file "/js/bootstrap.bundle.min.js" in template"
which causes most icons not to work. that's why I give it a different name in helix ultimate.
but why the icons can't be turned off separately in the Template : crypsisb4 tab Bccode could also be related to that
And I already have that with several kunena users using helix based template seen by renaming it suddenly started working