Collabora [ websrv_poll ] ERR Socket #23 SSL BIO error

Hello,

i try to install collabora for my nextclound instance …

I start my docker with

docker run -t -d -p 9980:9980 -e "domain=cloud\\.xxxxxxxx\\.fr|collabora\\.xxxxxxxx\\.fr" -e 'dictionaries=fr' --cap-add MKNOD --restart always collabora/code

i can access to https://collabora.xxxxxxxx.fr/hosting/discovery,
but when i try to open document in nextcloud i can see this error in the docker logs

wsd-00029-00038 2019-09-20 13:23:44.383116 [ websrv_poll ] ERR  Socket #23 SSL BIO error: error:14094416:SSL routines:ssl3_read_bytes:sslv3 alert certificate unknown (0: Success)| ./net/SslSocket.hpp:281
wsd-00029-00038 2019-09-20 13:23:44.384785 [ websrv_poll ] ERR  Error while handling poll for socket #23 in websrv_poll: error:14094416:SSL routines:ssl3_read_bytes:sslv3 alert certificate unknown| ./net/Socket.hpp:570

i try bunch of things that i read on random google result … but always this error …
can you help me ?

hi, happy new year, same issue here, how do you manage to solve it?