ContainerProxy Error for Excel upload


I have upgraded shinyproxy to 2.2.0. Now I get an error message when trying to upload an excel file in a shiny app. Outside of ShinyProxy the app works properly.
The error message is:" <!-- ContainerProxy Copyright © 2016-2019 Open Analytics".
In the log file i see “Request method ‘POST’ not supported”.
Has this to do with ShinyProxy or do I have to change settings somewhere else? Any help appreciated.


Hi Daniel,

There is indeed a bug in version 2.2.0, please see

Hi Maxim,
Ok. Thank you for your quick response.


Fixed in ShinyProxy 2.2.1 - see