updateUserFields stopped working

I am having the exact same issue with the updateMember function. Although I do see that the wixUsersBackend . updateUserFields is a depricated function.

I get the following error when trying to run the updateMember function.

{
    "message": "Error: Unable to handle the request. Contact the site administrator or view site monitoring logs for more information.",
    "name": "Error",
    "stack": "Error: Unable to handle the request. Contact the site administrator or view site monitoring logs for more information.",
    "_elementoryError": true
}

Not sure if you are seeing the same thing or not.