['protocol version mismatch (client 7, server 8)']

Step 1: Provide a summary of your problem

• For general technical questions, problems or feature requests related to the code in this repository file an issue.

Step 2: Provide tmuxp details

• Include output of tmuxp debug-info
• Include any other pertinant system info not captured

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environment:
        dist: Linux-5.4.204-124.362.amzn2int.x86_64-x86_64-with-glibc2.2.5
        arch: x86_64
        uname: Linux; dev-dsk-deguzim-1a-fa82568b.us-east-1.amazon.com; 5.4.204-124.362.amzn2int.x86_64
        version: #1 SMP Wed Jul 13 03:24:31 UTC 2022
-------------------------

tmux version: 1.8
libtmux version: 0.12.0
tmuxp version: 1.12.1
tmux path: /usr/bin/tmux
tmuxp path: /home/deguzim/.local/lib/python3.7/site-packages/tmuxp
shell: /bin/zsh
-------------------------
tmux sessions:

        protocol version mismatch (client 7, server 8)
tmux windows:

        protocol version mismatch (client 7, server 8)
tmux panes:

        protocol version mismatch (client 7, server 8)
tmux global options:

        protocol version mismatch (client 7, server 8)
tmux window options:

        protocol version mismatch (client 7, server 8)

Step 3: Describe the problem:

Started new server, protocol mismatch. tmuxp seems to be using /usr/bin/tmux instead of what I have aliased.

$ tmux -V
tmux.orig 2.8

$ /usr/bin/tmux -V
tmux 1.8

I'm checking the code now, but the script here should be looking at something like which tmux or allow the user to set this in a configuration file.

Start by tracing how tmuxp gathers the tmux path for its debug information and compare that with the user's aliased tmux and /usr/bin/tmux. Done means tmuxp consistently uses the intended tmux executable or provides a documented configuration choice, without the protocol version mismatch.