Uncaught TypeError: Cannot read property 'toLowerCase' of undefined

[santhoshtr]

[Enter steps to reproduce:]

1. ...
2. ...

Atom: 1.24.0 x64
Electron: 1.6.16
OS: Ubuntu 17.10
Thrown From: atom-less package 0.1.10

Stack Trace

Uncaught TypeError: Cannot read property 'toLowerCase' of undefined

At /home/santhosh/.atom/packages/atom-less/lib/atom-less.coffee:22

TypeError: Cannot read property 'toLowerCase' of undefined
    at Object.render (/packages/atom-less/lib/atom-less.coffee:22:31)
    at /packages/atom-less/lib/atom-less.coffee:10:30)
    at CommandRegistry.handleCommandEvent (/usr/share/atom/resources/app/src/command-registry.js:388:36)
    at KeymapManager.module.exports.KeymapManager.dispatchCommandEvent (/usr/share/atom/resources/app/node_modules/atom-keymap/lib/keymap-manager.js:621:22)
    at KeymapManager.module.exports.KeymapManager.handleKeyboardEvent (/usr/share/atom/resources/app/node_modules/atom-keymap/lib/keymap-manager.js:412:28)
    at WindowEventHandler.handleDocumentKeyEvent (/usr/share/atom/resources/app/src/window-event-handler.js:108:40)

Commands

     -0:43.3.0 core:backspace (input.hidden-input)
     -0:43.3.0 intentions:highlight (input.hidden-input)
     -0:43.3.0 core:save (input.hidden-input)
     -0:12.6.0 core:backspace (input.hidden-input)
     -0:12.3.0 intentions:highlight (input.hidden-input)
     -0:12.2.0 core:save (input.hidden-input)

Non-Core Packages

atom-beautify 0.30.9 
atom-ide-ui 0.9.1 
atom-less 0.1.10 
atom-material-syntax 1.0.8 
autocomplete-python 1.10.5 
busy-signal 1.4.3 
docblockr 0.13.6 
git-plus 7.10.0 
ide-typescript 0.7.3 
intentions 1.1.5 
language-sfst 0.2.2 
linter 2.2.0 
linter-csslint 2.0.0 
linter-eslint 8.4.1 
linter-phpcs 1.6.8 
linter-ui-default 1.6.10 
opentype-feature-bundle 0.2.4 
python-indent 1.1.4 
python-tools 0.6.9 
seti-ui 1.10.0 
sort-all-the-things 1.1.0 
sort-lines 0.18.0