brew installation issue

[andriu5]

Hi all,

Could you please help to resolve the following issue during brew installation?:

$ brew tap wallix/awless; brew install awless
==> Tapping wallix/awless
Cloning into '/usr/local/Homebrew/Library/Taps/wallix/homebrew-awless'...
remote: Enumerating objects: 130, done.
remote: Total 130 (delta 0), reused 0 (delta 0), pack-reused 130
Receiving objects: 100% (130/130), 20.09 KiB | 1.67 MiB/s, done.
Resolving deltas: 100% (31/31), done.
Error: Invalid formula: /usr/local/Homebrew/Library/Taps/wallix/homebrew-awless/Formula/awless.rb
awless: Calling `cellar` in a bottle block is disabled! Use `brew style --fix` on the formula to update the style or use `sha256` with a `cellar:` argument instead.
Please report this issue to the wallix/awless tap (not Homebrew/brew or Homebrew/core), or even better, submit a PR to fix it:
  /usr/local/Homebrew/Library/Taps/wallix/homebrew-awless/Formula/awless.rb:12

Error: Cannot tap wallix/awless: invalid syntax in tap!
Warning: No available formula or cask with the name "awless". Did you mean less?
==> Searching for similarly named formulae...
This similarly named formula was found:
less
To install it, run:
  brew install less
==> Searching for a previously deleted formula (in the last month)...
Error: No previously deleted formula found.
==> Searching taps on GitHub...
Error: No formulae found in taps.