.. include:: /Includes.rst.txt

==========================
TYPO3 Exception 1376683066
==========================

.. include:: /If-you-encounter-this-exception.rst.txt

The slot method "..." returned a different number (...) of arguments, than it received (...).
=============================================================================================

This happens if a signal slot method is wrongly used.

Example
-------

The signal is called with a parameter `[$csvRow]`:

::

   $this->signalSlotDispatcher->dispatch(__CLASS__, 'beforeSetCsvRow', [$csvRow]);

However the according slot method returns only `$csvRow`

::

   class DatabaseRecordListSlots
   {
     public function addValuesToCsvRow($csvRow)
     {
       $csvRow['new'] = 128;
       return $csvRow;
     }
   }

The slot must return the same array of arguments as the dispatcher
signal has used before.

::

   class DatabaseRecordListSlots
   {
     public function addValuesToCsvRow($csvRow)
     {
       $csvRow['new'] = 128;
       return [$csvRow];
     }
   }