I got `Minified React error #307` on 10.0.0 version.

Do you want to request a feature or report a bug?

• [o] I found a bug
• I want to propose a feature

What is the current behavior? I got Minified React error #307 on 10.0.0 version. My app crashes on pages were dropzone is implemented. When I return it on 9.0.0 it works fine. If the current behavior is a bug, please provide the steps to reproduce.

What is the expected behavior?

If this is a feature request, what is motivation or use case for changing the behavior?

Please mention other relevant information such as the browser version, Operating System and react-dropzone version.

[thaddeusreid]

I am also seeing an app-crashing error after upgrading to v10.

Some additional details:

• react/react-dom@16.8.3
• webpack@3.2.3

The react-dropzone component loads just fine when loading my app without minification. To reproduce the error, bundle the app and minify it. When the component is loaded the app will crash (white screen) and throw an error in console:

app.04245da74f0362e33719.js:145 TypeError: Cannot set property 'lastEffect' of null
    at ti (app.04245da74f0362e33719.js:145)
    at ni (app.04245da74f0362e33719.js:145)
    at Object.useEffect (app.04245da74f0362e33719.js:145)
    at useEffect (app.04245da74f0362e33719.js:129)
    at L (app.04245da74f0362e33719.js:121)
    at E (app.04245da74f0362e33719.js:121)
    at Ko (app.04245da74f0362e33719.js:145)
    at app.04245da74f0362e33719.js:145
    at Xa (app.04245da74f0362e33719.js:145)
    at Ha (app.04245da74f0362e33719.js:145)
    at Ss (app.04245da74f0362e33719.js:145)
    at qs (app.04245da74f0362e33719.js:145)
    at xe (app.04245da74f0362e33719.js:145)
    at wn (app.04245da74f0362e33719.js:145)

Happy to share more details as needed.

Edit: Work-around is to downgrade to v9.0.0, no more crashing.

[rolandjitsu]

I think lastEffect is an internal react error, see this SO and facebook/react#14014. In any case, the error is not a direct cause of this lib, so I’ll be closing the issue.