3D FlipBook - Several JS errors when PDF loaded

Hi, When I try to load a PDF file in a New Post, the PDF preview goes empty and I get some errors from console:

Thank you very much in advance. Alberto:

JQMIGRATE: Migrate is installed, version 3.3.2
colorpicker.js?ver=1.1.1:338 Uncaught SyntaxError: Unexpected end of input
3react-dom.min.js?ver=16.13.1:125 TypeError: this.container.ColorPicker is not a function

edit.min.js?ver=1.11.2:6 TypeError: this.container.ColorPicker is not a function
    at ColorProp.componentDidUpdate (edit.min.js?ver=1.11.2:6)
    at oj (react-dom.min.js?ver=16.13.1:127)