Error 400 Bad Request Zoho [reason phrase] Bad Request

install : zoho editor
package type : pydio & pydio-all
server OS : Debian 8.10
pydio version : 8.0.2

I have this error when I want to view a docx file

Client error response [url] [status code] 400 [reason phrase] Bad Request

I activated the zoho plugin,
I created an account on
I got my api key that I put in the configuration of the plugin.
I copied the Z-Agent key into /usr/share/pydio/plugins/editor.zoho/agent/save_zoho.php
I put the rights apache on all the directory and under directories /usr/share/pydio/

Do you have an idea of the problem ?

thanks in advance