Uncaught TypeError: Cannot read property 'getStackClasses' of null

[nathan62570]

[Enter steps to reproduce:]

I got this issue when i just try to use the get() function for Service or just retrieve data from the request of ajax request

Atom: 1.48.0 x64
Electron: 5.0.13
OS: Unknown Windows version
Thrown From: atom-symfony2 package 0.3.0

Stack Trace

Uncaught TypeError: Cannot read property 'getStackClasses' of null

At C:\Users\deryckeren\.atom\packages\atom-symfony2\lib\providers\service-provider.coffee:31

TypeError: Cannot read property 'getStackClasses' of null
    at ServiceProvider.module.exports.ServiceProvider.getSuggestions (/packages/atom-symfony2/lib/providers/service-provider.coffee:31:34)
    at ~/AppData/Local/atom/app-1.48.0/resources/app/static/<embedded>:11:648842
    at Array.forEach (<anonymous>)
    at AutocompleteManager.getSuggestionsFromProviders (~/AppData/Local/atom/app-1.48.0/resources/app/static/<embedded>:11:648358)
    at AutocompleteManager.findSuggestions (~/AppData/Local/atom/app-1.48.0/resources/app/static/<embedded>:11:648096)
    at AutocompleteManager.requestNewSuggestions (~/AppData/Local/atom/app-1.48.0/resources/app/static/<embedded>:11:656629)
    at AutocompleteManager.showOrHideSuggestionListForBufferChanges (~/AppData/Local/atom/app-1.48.0/resources/app/static/<embedded>:11:657720)
    at Function.simpleDispatch (~/AppData/Local/atom/app-1.48.0/resources/app/static/<embedded>:11:1201460)
    at Emitter.emit (~/AppData/Local/atom/app-1.48.0/resources/app/static/<embedded>:11:1202901)
    at TextBuffer.emitDidChangeTextEvent (~/AppData/Local/atom/app-1.48.0/resources/app/static/<embedded>:11:505021)
    at TextBuffer.transact (~/AppData/Local/atom/app-1.48.0/resources/app/static/<embedded>:11:493176)
    at TextEditor.transact (~/AppData/Local/atom/app-1.48.0/resources/app/static/<embedded>:11:24215)
    at ~/AppData/Local/atom/app-1.48.0/resources/app/static/<embedded>:11:16150
    at TextEditor.mergeSelections (~/AppData/Local/atom/app-1.48.0/resources/app/static/<embedded>:11:39484)
    at TextEditor.mergeIntersectingSelections (~/AppData/Local/atom/app-1.48.0/resources/app/static/<embedded>:11:39038)
    at TextEditor.mutateSelectedText (~/AppData/Local/atom/app-1.48.0/resources/app/static/<embedded>:11:16113)
    at TextEditor.insertText (~/AppData/Local/atom/app-1.48.0/resources/app/static/<embedded>:11:15662)
    at TextEditor.e.(anonymous function) [as insertText] (~/AppData/Local/atom/app-1.48.0/resources/app/static/<embedded>:11:258561)
    at TextEditorComponent.didTextInput (~/AppData/Local/atom/app-1.48.0/resources/app/static/<embedded>:11:94346)

Commands

     -3:58.1.0 core:backspace (input.hidden-input)
     -3:57.6.0 emmet:insert-formatted-line-break-only (input.hidden-input)
     -3:57.6.0 editor:newline (input.hidden-input)
  9x -3:53 core:backspace (input.hidden-input)
  2x -3:30.8.0 core:move-right (input.hidden-input)
     -2:37.5.0 emmet:insert-formatted-line-break-only (input.hidden-input)
     -2:37.4.0 editor:newline (input.hidden-input)
  3x -2:32.3.0 core:backspace (input.hidden-input)
  2x -2:15.9.0 core:move-right (input.hidden-input)
     -1:32.6.0 emmet:insert-formatted-line-break-only (input.hidden-input)
     -1:32.6.0 editor:newline (input.hidden-input)
  7x -1:17.4.0 core:backspace (input.hidden-input)
  2x -0:57.8.0 core:move-right (input.hidden-input)
     -0:56.5.0 emmet:insert-formatted-line-break-only (input.hidden-input)
     -0:56.5.0 editor:newline (input.hidden-input)
  7x -0:34 core:backspace (input.hidden-input)

Non-Core Packages

atom-material-syntax 1.0.8 
atom-material-ui 2.1.3 
atom-symfony 1.2.4 
atom-symfony2 0.3.0 
emmet 2.4.3 
php-twig 4.0.0 
symfony-commands 0.4.3