Template in Calc

I’m using CODE since 10 months without any problems. Today i’m trying to use templates (in calc) but CODE is unable to open ots files. Even when i configure it in admin panel.
The configuration seem to be correct. Has anyone encountered this problem?
Thank you,

You didn’t mention, but you’re probably using Nextcloud, right? In that case, there are these issues open:

Hi Bearon,
That’s right, i use CODE on Nextcloud. I’ll see if i can resolve that with these comments you sent me.
Thank you for your help.