Upload large csv file session Reconnect message appears

[prateek032]

Similar to the issue #1493
When we try to upload any csv file to assets div via file upload div, the current RCloud session logs out.
This behavior is observed on RCloud-2 and Local instances in firefox browser. 'Reconnect' message appears immediately after uploading a csv file to asset.

[gordonwoodhull]

Confirmed on local and rcloud-2 (but not rcloud.research). The asset apparently uploads successfully before killing the connection, as the confirmation appears in the file upload panel, and the content is there on reload.

[gordonwoodhull]

This is bad, but it's also really hard to track down. Putting off. At least the notebook is okay when reloaded.

[prateek032]

The same message appears after uploading 200kb docx file to the asset