Issue #3986πŸ’¬ AnsweredOpened Dec 1, 2021by throne19863 reactions

Cannot read properties of undefined (reading 'uploadFile')

Quick answerby jkntar❀ 1

I ran into this problem, too. It seemed to happen whenever I started dragging a block's media icon instead of the block text or block container. It seems that the issue was resolved by adding pointer-events: none; to each of my block's media image styles. The image I'm talking about being dragged: In my case:

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Question

GrapesJS version [X] I confirm to use the latest version of GrapesJS What browser are you using? Chrome v96.0.4664.45 Reproducible demo link https://codesandbox.io/s/react-redux-toolkit-application-forked-l5rhp?file=/src/pages/Editor.js Describe the bug How to reproduce the bug?Just drag and drop the logo to canvas you should get the error What is the expected behavior? Drag and drop the logo to canvas What is the current behavior? I have created a simple custom plugin just a logo , now when I drag and drop to canvas I get the following error Cannot read properties of undefined (reading 'uplo...

Answers (4)

jkntarβ€’ Dec 3, 2021

I ran into this problem, too. It seemed to happen whenever I started dragging a block's media icon instead of the block text or block container. It seems that the issue was resolved by adding pointer-events: none; to each of my block's media image styles. The image I'm talking about being dragged:...

markovic-nikolaβ€’ Dec 8, 2021

pointer-events: none; is not working for me, I literally have to restart the whole browser in order to make it working normally again.

luasenvyβ€’ Dec 17, 2021

pointer-events: none; is not working for me, I literally have to restart the whole browser in order to make it working normally again.

@markovic-nikola This Is REALLY IMPORTANT. SUPER THANKS. :D

GJSBlockβ€’ May 17, 2026

Thanks for reporting this, @throne1986. Great question about Cannot read properties of undefined (reading 'uploadFile'). The recommended approach with Canvas is to use the event-driven API. Start here: Check the GrapesJS documentation for your specific module Look for the on() event listener method...

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