Could not find command "__completion_bash"

[reneatzi]

I get the following error when I try to use tab completion
Could not find command "__completion_bash"

My Environment
OS: Arch Linux x86_64
Kernel: 5.2.13-arch1-1-ARCH
Shell: zsh 5.7.1

Installed terjira only local with gem install terjira.

Apart from the small issue really excellent work! Thank you very much.