Hello @tsetsiba
As I can see, the error mentioned by you is not quite related to the changed websocket library.
Please create a separate thread and describe there your problem in most details. Remember to provide version of used Document Server and its logs after reproducing the issue.
Logs of Document Server you can find:
- for Windows installation in
C:\Program Files\ONLYOFFICE\DocumentServer\Log\
; - for Linux installation in
/var/log/onlyoffice/documentserver/
(same path for Docker but inside the container with Document Server).
In general, you can reference your proxy config with the ones that we recommend using:
https://helpcenter.onlyoffice.com/installation/docs-community-proxy.aspx