Tmux fix reattach-to-user-namespace unsupported new OS error

tmux.conf

# how to fix the error:
# warning: reattach-to-user-namespace: unsupported new OS, trying as if it were "10.10" Mojave

# replace

bind-key -T copy-mode-vi 'y' send -X copy-pipe "reattach-to-user-namespace pbcopy"

# with 

bind-key -T copy-mode 'y' send -X copy-pipe-and-cancel "pbcopy"

# in tmux.conf

# https://github.com/tmux-plugins/tmux-sensible/issues/42

Thanks!

Thanks!

For me what worked was this:

bind-key -Tcopy-mode-vi 'y' send -X copy-pipe-and-cancel "pbcopy"