Uncaught TypeError: Array.prototype.indexOf called on null or undefined

[solidevolution]

[Enter steps to reproduce below:]

1. ...
2. ...

Atom Version: 0.194.0
System: Mac OS X 10.10.3
Thrown From: linter package, v0.12.1

Stack Trace

Uncaught TypeError: Array.prototype.indexOf called on null or undefined

At /Users/solidevolution/.atom/packages/linter/lib/linter.coffee:168

TypeError: Array.prototype.indexOf called on null or undefined
  at indexOf (native)
  at /Users/solidevolution/.atom/packages/linter/lib/linter.coffee:168:12
  at Emitter.module.exports.Emitter.emit (/Applications/Atom.app/Contents/Resources/app.asar/node_modules/event-kit/lib/emitter.js:82:11)
  at ChildProcess.<anonymous> (/Applications/Atom.app/Contents/Resources/app.asar/src/buffered-process.js:95:25)
  at emitOne (events.js:77:13)
  at ChildProcess.emit (events.js:166:7)
  at Process.ChildProcess._handle.onexit (child_process.js:1055:12)
  at child_process.js:1127:20
  at process._tickCallback (node.js:357:13)

Commands

     -3:20.3.0 core:backspace (atom-text-editor.editor.is-focused)
     -3:19.8.0 emmet:insert-formatted-line-break-only (atom-text-editor.editor.is-focused)
     -3:19.8.0 editor:newline (atom-text-editor.editor.is-focused)
     -3:19.5.0 core:paste (atom-text-editor.editor.is-focused)
     -3:12.2.0 editor:select-to-first-character-of-line (atom-text-editor.editor.is-focused)
     -3:11.9.0 core:cut (atom-text-editor.editor.is-focused)
     -3:11.2.0 editor:select-to-first-character-of-line (atom-text-editor.editor.is-focused)
  2x -3:10.8.0 core:backspace (atom-text-editor.editor.is-focused)
  9x -3:10.4.0 core:move-down (atom-text-editor.editor.is-focused)
     -3:08.4.0 emmet:insert-formatted-line-break-only (atom-text-editor.editor.is-focused)
     -3:08.4.0 editor:newline (atom-text-editor.editor.is-focused)
     -3:08.3.0 core:paste (atom-text-editor.editor.is-focused)
     -3:07.7.0 core:save (atom-text-editor.editor.is-focused)
     -3:07.2.0 core:backspace (atom-text-editor.editor.is-focused)
     -3:07.0 core:save (atom-text-editor.editor.is-focused)
     -1:41.2.0 core:close (atom-text-editor.editor.is-focused)

Config

{
  "core": {
    "themes": [
      "atom-dark-ui",
      "monokai"
    ]
  },
  "linter": {}
}

Installed Packages

# User
angularjs, v0.2.0
autocomplete-plus, v2.12.0
color-picker, v1.7.0
compare-files, v0.4.1
docs-snippets, v0.8.0
emmet, v2.3.8
file-icons, v1.5.4
linter, v0.12.1
linter-php, v0.0.12
linter-phpcs, v0.0.14
linter-phpmd, v0.0.10
minimap, v4.7.6
monokai, v0.14.0
open-terminal-here, v0.5.0
php-twig, v3.0.0
recent-files, v0.3.0
symbols-tree-view, v0.9.2
tree-view-open-files, v0.2.3

# Dev
No dev packages