Trouble fetching the session_id when tmux server is already running

[Gigibeau]

Step 1: Provide a summary of your problem

There is a fetching error when trying to start a tmuxp session while already hosting a tmux server. No matter if I create a new session or append to the current one.

Step 2: Provide tmuxp details

-------------------------
environment:
    dist: macOS-13.1-arm64-arm-64bit
    arch: arm64
    uname: Darwin; MacBook-Pro-2.local; 22.2.0
    version: Darwin Kernel Version 22.2.0: Fri Nov 11 02:03:51 PST 2022; root:xnu-8792.61.2~4/RELEASE_ARM64_T6000
-------------------------
python version: 3.11.1 (main, Dec 23 2022, 09:25:23) [Clang 14.0.0 (clang-1400.0.29.202)]

tmux version: 3.3
libtmux version: 0.20.0
tmuxp version: 1.26.0
tmux path: /opt/homebrew/bin/tmux
tmuxp path: /opt/homebrew/Cellar/tmuxp/1.26.0/libexec/lib/python3.11/site-packages/tmuxp
shell: /bin/zsh
-------------------------
tmux sessions:
    config: 6 windows (created Wed Jan 25 15:17:20 2023)
    xxx: 4 windows (created Wed Jan 25 15:17:20 2023) (attached)
    xxx28: 1 windows (created Wed Jan 25 16:07:11 2023)
    rust: 2 windows (created Wed Jan 25 15:17:20 2023)

tmux windows:
    1: home* (2 panes) [168x53] [layout 6447,168x53,0,0{123x53,0,0,0,44x53,124,0,1}] @0 (active)
    2: nvim- (1 panes) [168x53] [layout bdff,168x53,0,0,2] @1
    3: logs (3 panes) [80x24] [layout 8f3c,80x24,0,0{40x24,0,0[40x12,0,0,3,40x11,0,13,4],39x24,41,0,5}] @2
    4: all-logs (1 panes) [168x53] [layout be03,168x53,0,0,6] @3

tmux panes:
    0: [123x53] [history 301/64096, 128133 bytes] %0 (active)
    1: [44x53] [history 9/64096, 3934 bytes] %1

tmux global options:
    @plugin jlipps/tmux-safekill
    activity-action other
    assume-paste-time 1
    base-index 1
    bell-action any
    default-command "which reattach-to-user-namespace > /dev/null && reattach-to-user-namespace -l /bin/zsh || /bin/zsh"
    default-shell /bin/zsh
    default-size 80x24
    destroy-unattached off
    detach-on-destroy on
    display-panes-active-colour colour33
    display-panes-colour colour166
    display-panes-time 1000
    display-time 750
    history-limit 64096
    key-table root
    lock-after-time 0
    lock-command "lock -np"
    message-command-style "fg=#eee8d5,bg=#073642"
    message-style "fg=#eee8d5,bg=#073642"
    mouse on
    prefix C-q
    prefix2 None
    renumber-windows off
    repeat-time 0
    set-titles off
    set-titles-string "#S:#I:#W - \"#T\" #{session_alerts}"
    silence-action other
    status on
    status-bg #002b36
    status-fg cyan
    status-format[0] "#[align=left range=left #{E:status-left-style}]#[push-default]#{T;=/#{status-left-length}:status-left}#[pop-default]#[norange default]#[list=on align=#{status-justify}]#[list=left-marker]<#[list=right-marker]>#[list=on]#{W:#[range=window|#{window_index} #{E:window-status-style}#{?#{&&:#{window_last_flag},#{!=:#{E:window-status-last-style},default}}, #{E:window-status-last-style},}#{?#{&&:#{window_bell_flag},#{!=:#{E:window-status-bell-style},default}}, #{E:window-status-bell-style},#{?#{&&:#{||:#{window_activity_flag},#{window_silence_flag}},#{!=:#{E:window-status-activity-style},default}}, #{E:window-status-activity-style},}}]#[push-default]#{T:window-status-format}#[pop-default]#[norange default]#{?window_end_flag,,#{window-status-separator}},#[range=window|#{window_index} list=focus #{?#{!=:#{E:window-status-current-style},default},#{E:window-status-current-style},#{E:window-status-style}}#{?#{&&:#{window_last_flag},#{!=:#{E:window-status-last-style},default}}, #{E:window-status-last-style},}#{?#{&&:#{window_bell_flag},#{!=:#{E:window-status-bell-style},default}}, #{E:window-status-bell-style},#{?#{&&:#{||:#{window_activity_flag},#{window_silence_flag}},#{!=:#{E:window-status-activity-style},default}}, #{E:window-status-activity-style},}}]#[push-default]#{T:window-status-current-format}#[pop-default]#[norange list=on default]#{?window_end_flag,,#{window-status-separator}}}#[nolist align=right range=right #{E:status-right-style}]#[push-default]#{T;=/#{status-right-length}:status-right}#[pop-default]#[norange default]"
    status-format[1] "#[align=centre]#{P:#{?pane_active,#[reverse],}#{pane_index}[#{pane_width}x#{pane_height}]#[default] }"
    status-interval 1
    status-justify left
    status-keys emacs
    status-left "#[fg=#073642,bg=#eee8d5,bold] #S #[fg=#eee8d5,bg=#93a1a1,nobold,nounderscore,noitalics]#[fg=#15161E,bg=#93a1a1,bold] #[fg=#93a1a1,bg=#002b36]"
    status-left-length 100
    status-left-style NONE
    status-position bottom
    status-right "#[fg=#586e75,bg=#002b36,nobold,nounderscore,noitalics]#[fg=#93a1a1,bg=#586e75] #{prefix_highlight} #[fg=#657b83,bg=#586e75,nobold,nounderscore,noitalics]#[fg=#93a1a1,bg=#657b83] #[fg=#93a1a1,bg=#657b83,nobold,nounderscore,noitalics]#[fg=#15161E,bg=#93a1a1,bold] #(tmux-mem-cpu-load --interval 1 -g 5 -a 0) "
    status-right-length 100
    status-right-style NONE
    status-style "fg=#586e75,bg=#073642"
    update-environment[0] DISPLAY
    update-environment[1] KRB5CCNAME
    update-environment[2] SSH_ASKPASS
    update-environment[3] SSH_AUTH_SOCK
    update-environment[4] SSH_AGENT_PID
    update-environment[5] SSH_CONNECTION
    update-environment[6] WINDOWID
    update-environment[7] XAUTHORITY
    update-environment[8] KITTY_LISTEN_ON
    visual-activity off
    visual-bell off
    visual-silence off
    word-separators "!\"#$%&'()*+,-./:;<=>?@[\\]^`{|}~"

tmux window options:
    cursor-colour none
    cursor-style default
    aggressive-resize off
    allow-passthrough off
    allow-rename off
    alternate-screen on
    automatic-rename on
    automatic-rename-format "#{b:pane_current_path}"
    clock-mode-colour colour64
    clock-mode-style 24
    copy-mode-match-style bg=cyan,fg=black
    copy-mode-current-match-style bg=magenta,fg=black
    copy-mode-mark-style bg=red,fg=black
    fill-character ''
    main-pane-height 24
    main-pane-width 80
    mode-keys vi
    mode-style "fg=#eee8d5,bg=#073642"
    monitor-activity off
    monitor-bell on
    monitor-silence 0
    other-pane-height 0
    other-pane-width 0
    pane-active-border-style "fg=#eee8d5"
    pane-base-index 0
    pane-border-format "#{?pane_active,#[reverse],}#{pane_index}#[default] \"#{pane_title}\""
    pane-border-indicators colour
    pane-border-lines single
    pane-border-status off
    pane-border-style "fg=#073642"
    pane-colours
    popup-style default
    popup-border-style default
    popup-border-lines single
    remain-on-exit off
    remain-on-exit-format "Pane is dead (#{?#{!=:#{pane_dead_status},},status #{pane_dead_status},}#{?#{!=:#{pane_dead_signal},},signal #{pane_dead_signal},}, #{t:pane_dead_time})"
    scroll-on-clear on
    synchronize-panes off
    window-active-style fg=colour12,bg=default
    window-size latest
    window-style fg=colour10,bg=default
    window-status-activity-style "underscore,fg=#839496,bg=#002b36"
    window-status-bell-style reverse
    window-status-current-format "#[fg=#002b36,bg=#eee8d5]#[fg=#b58900,bg=#eee8d5] #I #[fg=#eee8d5,bg=#b58900] #{b:window_name} #[fg=#b58900,bg=#002b36,nobold]"
    window-status-current-style fg=colour166,bg=default,bright
    window-status-format "#[fg=#002b36,bg=#002b36]#[default] #I  #{b:window_name} #[fg=#002b36,bg=#002b36,nobold,nounderscore,noitalics]"
    window-status-last-style default
    window-status-separator ''
    window-status-style "NONE,fg=#839496,bg=#002b36"
    wrap-search on
    xterm-keys on

Step 3: Describe the problem:

Steps to reproduce:

Already hosting a tmux server, having a xxx.tmuxp.yaml file with multiple windows and trying to execute it with tmuxp load xxx.tmuxp.yaml.

Observed Results:

When trying to create a new session:

Traceback (most recent call last):
  File "/opt/homebrew/bin/tmuxp", line 8, in <module>
    sys.exit(cli.cli())
             ^^^^^^^^^
  File "/opt/homebrew/Cellar/tmuxp/1.26.0/libexec/lib/python3.11/site-packages/tmuxp/cli/__init__.py", line 134, in cli
    command_load(
  File "/opt/homebrew/Cellar/tmuxp/1.26.0/libexec/lib/python3.11/site-packages/tmuxp/cli/load.py", line 642, in command_load
    load_workspace(
  File "/opt/homebrew/Cellar/tmuxp/1.26.0/libexec/lib/python3.11/site-packages/tmuxp/cli/load.py", line 448, in load_workspace
    _load_attached(builder, detached)
  File "/opt/homebrew/Cellar/tmuxp/1.26.0/libexec/lib/python3.11/site-packages/tmuxp/cli/load.py", line 184, in _load_attached
    builder.build()
  File "/opt/homebrew/Cellar/tmuxp/1.26.0/libexec/lib/python3.11/site-packages/tmuxp/workspace/builder.py", line 242, in build
    session = self.server.new_session(
              ^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/homebrew/Cellar/tmuxp/1.26.0/libexec/lib/python3.11/site-packages/libtmux/server.py", line 494, in new_session
    return Session.from_session_id(
           ^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/homebrew/Cellar/tmuxp/1.26.0/libexec/lib/python3.11/site-packages/libtmux/session.py", line 85, in from_session_id
    session = fetch_obj(
              ^^^^^^^^^^
  File "/opt/homebrew/Cellar/tmuxp/1.26.0/libexec/lib/python3.11/site-packages/libtmux/neo.py", line 244, in fetch_obj
    raise ObjectDoesNotExist(
libtmux._internal.query_list.ObjectDoesNotExist: Could not find session_id=$7 for list-sessions

When trying to append the windows:

Traceback (most recent call last):
  File "/opt/homebrew/bin/tmuxp", line 8, in <module>
    sys.exit(cli.cli())
             ^^^^^^^^^
  File "/opt/homebrew/Cellar/tmuxp/1.26.0/libexec/lib/python3.11/site-packages/tmuxp/cli/__init__.py", line 134, in cli
    command_load(
  File "/opt/homebrew/Cellar/tmuxp/1.26.0/libexec/lib/python3.11/site-packages/tmuxp/cli/load.py", line 642, in command_load
    load_workspace(
  File "/opt/homebrew/Cellar/tmuxp/1.26.0/libexec/lib/python3.11/site-packages/tmuxp/cli/load.py", line 450, in load_workspace
    _load_append_windows_to_current_session(builder)
  File "/opt/homebrew/Cellar/tmuxp/1.26.0/libexec/lib/python3.11/site-packages/tmuxp/cli/load.py", line 237, in _load_append_windows_to_current_session
    builder.build(current_attached_session, append=True)
  File "/opt/homebrew/Cellar/tmuxp/1.26.0/libexec/lib/python3.11/site-packages/tmuxp/workspace/builder.py", line 261, in build
    assert session.id
AssertionError

When no tmux server is running it works as usual though. This was no issue before I updated to the newest version through brew, I don't know which version I was on before.

Expected Results:

Starting the tmuxp session as usual.

Relevant Code:

Its quite a big configuration and to anonymizing it would take some time. I assume this has nothing to do with the config right? If I'm wrong I'm happy to provide it if needed (:.

[categulario]

What an interesting coincidence. I faced the same issue just now, three hours after you. It is happening with all my configs. I'm including one as reference but there's nothing special to it really.

session_name: coralillo
start_directory: /some/path/that/exists
windows:
- focus: 'true'
  layout: 66e2,211x58,0,0,13
  options: {}
  panes:
  - pipenv run pytest -xvv
  window_name: shell
- layout: 66e3,211x58,0,0,14
  options: {}
  panes:
  - focus: 'true'
    shell_command: nvim
  window_name: editor

[dcai]

ran into the same issue, rolling back to older version 1.24.1 didn't work. then I tried kill tmux server tmux kill-server, restart, tmuxp worked, maybe something releated to tmux server status?

[tony]

Thank you everyone above. If we can get a way to reproduce this (perhaps on pytest) that would be very convenient.

@dcai Have you tried tmuxp v1.27.0? (New release this morning)

[tony]

In regards to v1.27.0 - @categulario @Gigibeau : Does anything change with this?

[dcai]

@tony yes I have tried 1.27 1.25 and 1.24.1, that doesnt make any difference, only killing tmux server worked for me.

my os is macos 13.1.

[Gigibeau]

@tony 1.27 did the trick for me, at least for now (:

[categulario]

@tony 1.27 works for me

[tony]

Good to know it works now @Gigibeau and @categulario !

@dcai Can you show your tmuxp -V and tmux -V? Maybe there's a package that is out of date? If not perhaps you can give more info on reproducing? (Maybe you have an issue, but it's a different one, or maybe it's the same as other's have, not sure yet!)