Byobu crashes on startup (Mac)

[hoshy]

I updated byobu using homebrew and now byobu doesn't start anymore.

> brew info byobu
byobu: stable 5.129, HEAD
Text-based window manager and terminal multiplexer
https://launchpad.net/byobu
Conflicts with:
  ctail (because both install `ctail` binaries)
/usr/local/Cellar/byobu/5.129 (161 files, 657.5KB) *
  Built from source on 2019-09-30 at 19:11:22
From: https://github.com/Homebrew/homebrew-core/blob/master/Formula/byobu.rb
==> Dependencies
Required: coreutils ✔, gnu-sed ✔, newt ✔, tmux ✔
==> Options
--HEAD
 Install HEAD version
==> Caveats
Add the following to your shell configuration file:
  export BYOBU_PREFIX=/usr/local
==> Analytics
install: 721 (30 days), 2,694 (90 days), 10,286 (365 days)
install_on_request: 661 (30 days), 2,427 (90 days), 9,400 (365 days)
build_error: 0 (30 days)

> byobu
readlink: illegal option -- f
usage: readlink [-n] [file ...]
usage: dirname path
usage: dirname path

Thanks,
Martin