TypeError with a pptx file with an file attachment

[SylvainO]

Hi,
when i try to open a pptx with a file in attachment or a pic , i get this error :

Error :  TypeError: Cannot read property 'prototype' of undefined
    at _class._init (C:\Users\User\Documents\Workspace\pikeDocX\node_modules\docx4js\src\openxml\docx\officeDocument.js:10:15)
    at _class.Part (C:\Users\User\Documents\Workspace\pikeDocX\node_modules\docx4js\src\openxml\part.js:26:8)
    at _class (C:\Users\User\Documents\Workspace\pikeDocX\node_modules\docx4js\lib\openxml\officeDocument.js:39:101)
    at new _class (C:\Users\User\Documents\Workspace\pikeDocX\node_modules\docx4js\lib\openxml\docx\officeDocument.js:39:95)
    at _class (C:\Users\User\Documents\Workspace\pikeDocX\node_modules\docx4js\src\openxml\document.js:9:23)
    at new _class (C:\Users\User\Documents\Workspace\pikeDocX\node_modules\docx4js\lib\openxml\docx\document.js:29:95)
    at C:\Users\User\Documents\Workspace\pikeDocX\node_modules\docx4js\src\document.js:177:14
    at parse (C:\Users\User\Documents\Workspace\pikeDocX\node_modules\docx4js\src\document.js:174:8)
    at C:\Users\User\Documents\Workspace\pikeDocX\node_modules\docx4js\src\document.js:188:7
    at FSReqCallback.readFileAfterClose [as oncomplete] (internal/fs/read_file_context.js:61:3)

My code :

import docx4js from 'docx4js'
docx4js.load("test.pptx").then(pptx=>{
	console.log(pptx)
}).catch(e=> console.log( "Error : ", e))

Regards