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Description:
“Cannot read the undefined classlist” console error occurs when programmatically uploading the file with showFileList as false.
Sample: https://stackblitz.com/edit/react-1w3fh4-kzswat?file=index.js,package.json
Note: the same case is working fine for showFileList as true and autoupload as true.

Same issue occurs in JS platform,
JS Sample: https://stackblitz.com/edit/c7s54x-ef6rpd?file=index.html,index.js

Replication Procedure:
Expected: File should upload properly
Actual: console error occurs