API issue with Dropbox

people elsewhere are reporting an issue with dropbox API which prevents syncing

Bad input to API call Error in call to API function "files/ get_metadata": Unknown API function: / 2/files/get_metadata

Path: /data

see here : https://www.dropboxforum.com/t5/Dropbox-API-Support-Feedback/API-function-get-metadata-started-to-fail/td-p/638921