Aug 19, 2020 06:44 AM|Sean Fang|LINK
It looks like you missing the setting for the CKEditor for the environment.
Could you please show me how you integrate the CKEditor4 in your project?
One reason is that you do not download all of files for CKEditor4?
The files inside the folder should look like below:
If you don't, you could go to CKEditor 4 's website to download the necessary package.