Problème avec Onlyoffice

Hello, I installed nextcloud on a VPS running on Ubuntu 16.04 LTS,
I activated onlyoffice:
I can create and open text and doc files without problems but
for powerpoint files, I can create them but I can not open them
and I can not create exels files.

to conclude:
I can create a powerpoint file but I can not open them on nextcloud;
I can not create or open an exel file

Thank you in advance.

Hello @NetAdmin,

Could you please send us screenshot of the address settings in administrator section of NextCloud.

We would also ask you to send us screenshot of the page with opened browser’s console (tab Console) while reproducing the problem.

Please also send us logs of NextCloud to