Uncaught TypeError: Cannot read property 'length' of undefined

[imp]

Got this when running formatting (atom-beautify)

Atom: 1.19.0 x64
Electron: 1.6.9
OS: Ubuntu 16.04.3
Thrown From: rust-api-docs-helper package 0.5.1

Stack Trace

Uncaught TypeError: Cannot read property 'length' of undefined

At /home/imp/.atom/packages/rust-api-docs-helper/lib/gutter-decorator.coffee:22

TypeError: Cannot read property 'length' of undefined
    at GutterDecorator.module.exports.GutterDecorator.updateMarkers (/packages/rust-api-docs-helper/lib/gutter-decorator.coffee:22:7)
    at /packages/rust-api-docs-helper/lib/gutter-decorator.coffee:1:1
    at Function.module.exports.Emitter.simpleDispatch (/usr/share/atom/resources/app/node_modules/event-kit/lib/emitter.js:25:20)
    at Emitter.module.exports.Emitter.emit (/usr/share/atom/resources/app/node_modules/event-kit/lib/emitter.js:141:34)
    at TextBuffer.module.exports.TextBuffer.emitDidStopChangingEvent (/usr/share/atom/resources/app/node_modules/text-buffer/lib/text-buffer.js:1571:26)
    at later (/usr/share/atom/resources/app/node_modules/text-buffer/lib/helpers.js:21:13)

Commands

     -0:14.5.0 atom-beautify:beautify-editor (input.hidden-input)

Non-Core Packages

atom-beautify 0.30.4 
atomatigit 1.5.5 
autocomplete-python 1.10.0 
browser-plus 0.0.98 
build 0.68.0 
build-cargo 2.0.0 
build-make 0.13.0 
busy 0.7.0 
busy-signal 1.4.3 
imdone-atom 2.2.6 
imdone-atom-github 0.1.11 
intentions 1.1.5 
language-diff 0.7.0 
language-docker 1.1.8 
language-rust 0.4.12 
linter 2.2.0 
linter-pycodestyle 2.0.2 
linter-rust 0.8.0 
linter-ui-default 1.6.3 
merge-conflicts 1.4.5 
minimap 4.29.3 
minimap-git-diff 4.3.1 
project-manager 3.3.5 
python-tools 0.6.9 
racer 0.20.0 
release-notes 0.53.0 
rust-api-docs-helper 0.5.1 
rusty-dark-syntax 0.7.0 
split-diff 1.4.3 
sync-settings 0.8.2 
tool-bar 1.1.0 
travis-ci-status 1.3.1 

[yao2007]

same problem. I have no idea to fix it

[fztfztfztfzt]

I have the same problem.

[wolfadex]

This is also an issue with:
Atom: 1.23.3 x64
OS: OS X 10.11.6

[wired-R]

I have the same problem.