How to check if my libreoffice online is working ok?

Hellow everyone!

I am interesting to solve a comunication problem between owncloud and libreoffice online server.

I am know SSL certificate made by me.

But when I try to create a new document it says:

There have been problems while checking the integrity of the code. More information…
Collabora Online: Invalid SSL certificate.
Ask your administrator to add ca-cahin.cert.pem to ca-bundle.crt, for example

<< car /etc/loolwsd/ca-chain.cert.pem >> /recources/config/ca-bundle.crt>>.

The error message was: cURL error 60: SSL certificate problem: self signed certificate