How to make friends between the WebP format and CMS NetCat?

Question

Netcat CMS

Good afternoon.
The question is that in NETCAT CMS, when loading WebP files through the CKEditor editor, an error occurs with the following content:

File upload is prohibited.
Only the specified files are allowed: jpg, jpeg, gif, png, svg, txt, pdf, odp, ods, odt, rtf, doc, docx, xls, xlsx, ppt, pptx, ogv, mp4, webm, ogg, mp3, wav .

The question is how to allow the format to be loaded.

Answer 1

\netcat\editors\ckeditor4\filemanager\scripts\filemanager.config.js

"security": {
        "uploadPolicy": "DISALLOW_ALL",
        "uploadRestrictions": [
            "jpg",
            "jpeg",
            "gif",
            "png",
            "svg",
            "txt",
            "pdf",
            "odp",
            "ods",
            "odt",
            "rtf",
            "doc",
            "docx",
            "xls",
            "xlsx",
            "ppt",
            "pptx",
            "ogv",
            "mp4",
            "webm",
            "ogg",
            "mp3",
            "wav",
            "webp"
        ]
    },