TYPO3 Exception 1376683066¶

Note

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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];
  }
}