thank you for your help.
Linux 4.19.0-17-amd64 #1 SMP Debian 4.19.194-3 (2021-07-18) x86_64 GNU/Linux
I have collected the logs, the list is below;
Client v7.9.2 Log
I discovered something. In v6.13, there is a folder called running under /usr/NX/var/db/ and it records the screens there instantly.
This folder does not exist in v7.9.2.
I will be very happy if we can solve this problem.
I am sharing the logs in the attachment with my best regards.