Error updating GitLab CE from version 13.10.2 to the 14.0.2


I wanted to upgrade the gitlab-ce omnibus (single server) from version 13.10.2 to 14.0.2 but I got the message that I can only upgrade from version 13.12.x to 14.0.2. So I tried to upgrade gradually to version 13.11.6. But I get the message from the command apt upgrade gitlab-ce=13.11.6-ce.0 :
Malformed configuration JSON file found at /opt/gitlab/embedded/nodes/
This usually happens when your last run of gitlab-ctl reconfigure didn’t complete successfully.
This file is used to check if any of the unsupported configurations are enabled,
and hence require a working reconfigure before upgrading.
Please run sudo gitlab-ctl reconfigure to fix it and try again.

I executed the gitlab-ctl reconfigure command but the message in the output is:
Running handlers:
There was an error running gitlab-ctl reconfigure:

Cannot set unsupported config value application.

Please, for your advice.