Uploading large files to JupyterHub

Hi All,

We have jupyterhub running on containerized envrionment (openshift).
Jupyterhub gives us option to upload files, when we are uploading files (~200MB) we are getting message that file is uploaded successfully but in the backend it is still uploading the data.

Can anyone suggest how to show actual picture about how much it is uploaded or how to deal with this and let people notify to wait until the file uploaded fully or what is the right approach here.