Broken syntax in brew formula

[lessless]

rew install semaphoreci/tap/sem
Running `brew update --preinstall`...
==> Auto-updated Homebrew!
Updated 2 taps (homebrew/core and homebrew/cask).
==> New Formulae
gcc@12                                                         ttmath
==> Updated Formulae
Updated 13 formulae.
==> Updated Casks
Updated 11 casks.

==> Tapping semaphoreci/tap
Cloning into '/opt/homebrew/Library/Taps/semaphoreci/homebrew-tap'...
remote: Enumerating objects: 480, done.
remote: Counting objects: 100% (168/168), done.
remote: Compressing objects: 100% (167/167), done.
remote: Total 480 (delta 40), reused 3 (delta 1), pack-reused 312
Receiving objects: 100% (480/480), 56.95 KiB | 1.73 MiB/s, done.
Resolving deltas: 100% (117/117), done.
Error: Invalid formula: /opt/homebrew/Library/Taps/semaphoreci/homebrew-tap/Formula/sem.rb
sem: Calling bottle :unneeded is disabled! There is no replacement.
Please report this issue to the semaphoreci/tap tap (not Homebrew/brew or Homebrew/core):
  /opt/homebrew/Library/Taps/semaphoreci/homebrew-tap/Formula/sem.rb:9

Error: Cannot tap semaphoreci/tap: invalid syntax in tap!