Error exporting - "Failed to load resource: the server responded with a status of 500 (Internal Server Error)"

[Befeeter]

Hi,

I have trying to make work your centreon extension to export my centreon host/services,

i'm getting the following error in console when i push in "Export": "Failed to load resource: the server responded with a status of 500 (Internal Server Error)"

http://prntscr.com/1seuv9x

someone can help me ? my Centreon version is v. 2.8.13

BR.