Error connecting to ‘localhost:52698’: Connection refused - connect(2)

[jbwexler]

Hi, I'm trying to use rmate but consistently get the above error. The command I use to ssh is : ssh -R 52698:localhost:52698 ...
I had rmate working for a few years but then at some point last year this started happening every time. I don't know if it's due to a new version of Mac OS locally, or perhaps a new version of linux on the server. I have Max OS Montery v12.6.3 locally and CentOS 7 (Core) on the server. rmate is installed on the server at $HOME/.gem/ruby/gems/rmate-1.5.9/bin/rmate.