Blank Page appears on nextcloud

i integrated nextcloud with collabora. when i tries to open a microsoft document a blank page appears.
can anyone please help on this.

It seems that you have a similar problem of mine.
Iā€™v opened a topic here Nothing happen while openning Collabora
Is it the same ?
Have you fixed your problem ?

Yes, My issue was resolved by generating new SSL certificate and importing it in browser.

OK tanks !