Missing richeditor html editor

I can not use the richeditor.
The editor is missing, and it is not possible to edit or create new content.
There is not possible to edit the "Full description" in product details etc...…..

The only changes to my website that i have done recently is that before i had two language,
but now i have removed one of the language, but this should not be the source of the problem with the  

html editor.


I do know about the "secret settings" like adminareasettings.usericheditorinmessagetemplates so i do
not think that the problem is here.

Anybody have solution for this problem.

What version are you using ?
Is there any errors in the System log ?
You could inspect the product page (right mouse click in Google) and check if there are any script errors

Version 4,2
No errors about this in the log
on the webpage everything looks fine, and all the text i have created with the richeditor, are visible

in what file or files can i find the code that manage the html editor ?

Its an asp-template - in the case of Products and Full Description

<nop-editor asp-for="@Model.Locales[item].FullDescription" asp-template="RichEditor" />
<span asp-validation-for="@Model.Locales[item].FullDescription"></span>

See src\Presentation\Nop.Web\Areas\Admin\Views\Shared\EditorTemplates\RichEditor.cshtml

Thanks.

I have replaced the folder "Nop.Web\Areas\Admin\" on my server with a fresh copy from the source code.
But i still have the same problem. Somehow it must be some settings somewhere

These are the nop settings I see
adminareasettings.usericheditorinmessagetemplates  False
adminareasettings.usericheditorforcustomeremails  False
adminareasettings.richeditorallowstyletag  False
adminareasettings.richeditorallowjavascript  False
adminareasettings.richeditoradditionalsettings

Do you have anything to do with CKEditor 4

Yes I have this CKEditor4 Plugin for v4.2
See https://www.nopcommerce.com/en/ckeditor-rich-text-editor-plugin