Error example

gistfile1.txt

/usr/share/music-web/app/src/BBC/Music/Controllers/ErrorController.php:52:
object(Symfony\Component\Debug\Exception\ContextErrorException)[1625]
  private 'context' => 
    array (size=3)
      'titleOrArray' => 
        array (size=2)
          0 => string 'A Song for Guy's playlist - Playlists - BBC Music' (length=49)
          1 => string 'BBC Music' (length=9)
      'musicNavOptionsArray' => null
      'title' => string 'A Song for Guy's playlist - Playlists - BBC Music - BBC Music' (length=61)
  protected 'message' => string 'Warning: Invalid argument supplied for foreach()' (length=48)
  private 'string' (Exception) => string '' (length=0)
  protected 'code' => int 0
  protected 'file' => string '/usr/share/music-web/app/src/BBC/Music/Controllers/BaseController.php' (length=69)
  protected 'line' => int 91
  private 'trace' (Exception) => 
    array (size=7)
      0 => 
        array (size=6)
          'file' => string '/usr/share/music-web/app/src/BBC/Music/Controllers/PlaylistsController.php' (length=74)
          'line' => int 309
          'function' => string 'setPageHeader' (length=13)
          'class' => string 'BBC\Music\Controllers\BaseController' (length=36)
          'type' => string '->' (length=2)
          'args' => 
            array (size=2)
              ...
      1 => 
        array (size=4)
          'function' => string 'playlistAction' (length=14)
          'class' => string 'BBC\Music\Controllers\PlaylistsController' (length=41)
          'type' => string '->' (length=2)
          'args' => 
            array (size=1)
              ...
      2 => 
        array (size=4)
          'file' => string '/usr/share/music-web/vendor/symfony/http-kernel/HttpKernel.php' (length=62)
          'line' => int 153
          'function' => string 'call_user_func_array' (length=20)
          'args' => 
            array (size=2)
              ...
      3 => 
        array (size=6)
          'file' => string '/usr/share/music-web/vendor/symfony/http-kernel/HttpKernel.php' (length=62)
          'line' => int 68
          'function' => string 'handleRaw' (length=9)
          'class' => string 'Symfony\Component\HttpKernel\HttpKernel' (length=39)
          'type' => string '->' (length=2)
          'args' => 
            array (size=2)
              ...
      4 => 
        array (size=6)
          'file' => string '/usr/share/music-web/vendor/silex/silex/src/Silex/Application.php' (length=65)
          'line' => int 496
          'function' => string 'handle' (length=6)
          'class' => string 'Symfony\Component\HttpKernel\HttpKernel' (length=39)
          'type' => string '->' (length=2)
          'args' => 
            array (size=3)
              ...
      5 => 
        array (size=6)
          'file' => string '/usr/share/music-web/vendor/silex/silex/src/Silex/Application.php' (length=65)
          'line' => int 477
          'function' => string 'handle' (length=6)
          'class' => string 'Silex\Application' (length=17)
          'type' => string '->' (length=2)
          'args' => 
            array (size=1)
              ...
      6 => 
        array (size=6)
          'file' => string '/usr/share/music-web/web/index.php' (length=34)
          'line' => int 37
          'function' => string 'run' (length=3)
          'class' => string 'Silex\Application' (length=17)
          'type' => string '->' (length=2)
          'args' => 
            array (size=0)
              ...
  private 'previous' (Exception) => null
  protected 'severity' => int 2
  public 'xdebug_message' => string '<tr><th align='left' bgcolor='#f57900' colspan="5"><span style='background-color: #cc0000; color: #fce94f; font-size: x-large;'>( ! )</span> Symfony\Component\Debug\Exception\ContextErrorException: Warning: Invalid argument supplied for foreach() in /usr/share/music-web/app/src/BBC/Music/Controllers/BaseController.php on line <i>91</i></th></tr>
<tr><th align='left' bgcolor='#e9b96e' colspan='5'>Call Stack</th></tr>
<tr><th align='center' bgcolor='#eeeeec'>#</th><th align='left' bgcolor='#eeeeec'>Time</th><'... (length=3933)
Whoops, looks like something went wrong.

1/1
FatalThrowableError in ErrorController.php line 52:
Type error: Return value of BBC\Music\Controllers\ErrorController::errorAction() must be of the type string, null returned
in ErrorController.php line 52
at ErrorController->errorAction(object(Application), object(ContextErrorException), object(Request), 500) in bootstrap.php line 80
at {closure}(object(ContextErrorException), object(Request), 500)
at call_user_func(object(Closure), object(ContextErrorException), object(Request), 500) in ExceptionListenerWrapper.php line 53
at ExceptionListenerWrapper->__invoke(object(GetResponseForExceptionEvent), 'kernel.exception', object(TraceableEventDispatcher))
at call_user_func(object(ExceptionListenerWrapper), object(GetResponseForExceptionEvent), 'kernel.exception', object(TraceableEventDispatcher)) in WrappedListener.php line 106
at WrappedListener->__invoke(object(GetResponseForExceptionEvent), 'kernel.exception', object(EventDispatcher))
at call_user_func(object(WrappedListener), object(GetResponseForExceptionEvent), 'kernel.exception', object(EventDispatcher)) in EventDispatcher.php line 173
at EventDispatcher->doDispatch(array(object(WrappedListener), object(WrappedListener), object(WrappedListener), object(WrappedListener)), 'kernel.exception', object(GetResponseForExceptionEvent)) in EventDispatcher.php line 43
at EventDispatcher->dispatch('kernel.exception', object(GetResponseForExceptionEvent)) in TraceableEventDispatcher.php line 136
at TraceableEventDispatcher->dispatch('kernel.exception', object(GetResponseForExceptionEvent)) in HttpKernel.php line 230
at HttpKernel->handleException(object(ContextErrorException), object(Request), 1) in HttpKernel.php line 79
at HttpKernel->handle(object(Request), 1, true) in Application.php line 496
at Application->handle(object(Request)) in Application.php line 477
at Application->run() in index.php line 37