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The latest version of the book is P1.0, released about 1 month ago. If you've bought a PDF of the book and would like to update it to this version (for free), visit your home page.

By default this page displays the errata for the latest version of the book. If you have a previous version, select it here:

If you've found a new error, please submit it.

  • Typo
  • Tech. error
  • Suggestion
  • Maybe next edition
  • Not a problem
  • Reported in: B7.0 (18-Feb-19)
#84596
PDF page: 22
I'm getting the following error, when trying to exec lita handler for the first time: ````<...> Bundle complete! 6 Gemfile dependencies, 30 gems n...more...
  • Reported in: B9.0 (11-Apr-19)
#84852
PDF page: 28
“A chatbot skill is a bit of code that responds to a specific question with a relevant answer. Here’s an example: You: Lita, show me a picture of m...more...
  • Reported in: B9.0 (12-Apr-19)
#84864
PDF page: 30
Although this is "Build Chatbot Interactions" and I like the iterative and interactive style so far, I'd also like to know up front more about What's...more...
  • Reported in: B9.0 (11-Apr-19)
#84848
PDF page: 31
“You’ll need a computer that can run Ruby 2.0 or newer” in Preface:What you Need vs “If you have Ruby 2.2 or newer, a working copy of gem, and Bundl...more...
  • Reported in: B9.0 (12-Apr-19)
#84854
PDF page: 36
“The examples in this book are written and tested against Ubuntu, so you’re better off starting there if you don’t have a strong need to use a differe...more...
  • Reported in: B9.0 (12-Apr-19)
#84856
PDF page: 37
“Linux is preferred because so many developers build their production software using Ruby and host on a commodity cloud-based infrastructure. Because ...more...
  • Reported in: B9.0 (12-Apr-19)
#84855
PDF page: 38
“Don’t worry Windows users, there’s still good news: Microsoft has added a Linux compatibility layer to Windows 10 called the Windows Subsystem for Li...more...
  • Reported in: B9.0 (12-Apr-19)
#84867
PDF page: 38
I can't figure out if “Linux and WSL users” is only meant for Windows users or should be two sections. “The examples in this book are written and ...more...
  • Reported in: B9.0 (11-Apr-19)
#84853
PDF page: 40
“For Linux and WSL users, you can get Ruby by running sudo apt-get install ruby. For macOS users, you need to install the Homebrew[3] package manager ...more...
  • Reported in: B9.0 (11-Apr-19)
#84849
PDF page: 57
“At the end of each chapter you’ll find a seriese of challenges that present you with opportunities to expand on that chapter’s themes and techniques....more...
  • Reported in: B9.0 (11-Apr-19)
#84850
PDF page: 57
“At the end of each chapter you’ll find a seriese of challenges that present you with opportunities to expand on that chapter’s themes and techniques....more...
  • Reported in: B9.0 (12-Apr-19)
#84865
PDF page: 57
“Lita’s help command offers you several useful housekeeping and information tools. Try lita help and read over the list. Be sure and check out lita in...more...
  • Reported in: B9.0 (12-Apr-19)
#84866
PDF page: 84
“Continuous integration services, like Travis CI, help you and your Lita skills’ users build confidence in the robustness of your work. ” Instead o...more...
  • Reported in: B9.0 (12-Apr-19)
#84857
PDF page: 91
“In the next chapter, you’ll publish your new Lita bot to Heroku, a low-cost platform that’s a good fit for small Ruby tools like Lita. With Heroku, y...more...
  • Reported in: B9.0 (12-Apr-19)
#84863
PDF page: 91

“browse through some of the biggest hits”

is "greatest hits" the more common phrase?--Lloyd Dewolf

  • Reported in: B9.0 (12-Apr-19)
#84859
PDF page: 93
“Heroku allows you to click a button to jump from 1 to 5 instances of your finished application and back down to 1 if load requires” Also what does...more...
  • Reported in: B9.0 (12-Apr-19)
#84858
PDF page: 94
“Don’t worry, those STDOUT logs are still captured by logger services and streamed to a central location for you to review and search at your leisure”...more...
  • Reported in: B9.0 (12-Apr-19)
#84860
PDF page: 98
“On the Mac, you can use the Homebrew package manager[10] to get Heroku installed” should be "get Heroku CLI installed" which is the term you use l...more...
  • Reported in: B9.0 (12-Apr-19)
#84861
PDF page: 98
“logged in to the Heroku CLI tool” You don't technically log in to the Heroku CLI, you log in to the Heroku service, so something like "logged in t...more...
  • Reported in: B9.0 (12-Apr-19)
#84862
PDF page: 98

“You don’t need to worry about that to your account yet”

don't need to worry about *adding* that?--Lloyd Dewolf