I'm using Filestack ([email protected]) in my react app (16.12.0) and whenever I press upload on the picker I get this error in the console. The upload is working correctly and I'm getting the right result back from the onSuccess prop but I don't know if this error is caused by my app.
It's a bug in the filestack-react package related to how it appends the file uploader to a container id for and (but < PickerOverlay /> seems to work ok) you can try create you own component like suggested https://github.com/filestack/filestack-react/issues/116#issuecomment-898969991