I am using TinyMCE 5 and it was fine by now, but I suddenly started getting this error now, I have tried with both versions 4 and 5 of TinyMCE and same issue is happening.

I am integrating the Wiris plugin externally using this link (the one mentioned in the docs): https://www.wiris.net/demo/plugins/tiny_mce/plugin.js

The error is being thrown from the tinymce.min.js file at line 4, so I am supposing that TinyMCE itself is failing to integrate the Wiris plugin into the editor, but I am unable to detect the issue, and I couldn't find any solutions for this.

Thanks in advance, Please tell me if you need more details.