New error message from Phoca Download

[avrohom]

I've been using Phoca Download for a long time trouble free. But recently I get error messages from Phoca Download:
Warning Declaration of PhocaownloadCpController::display() should be compatible with Joomla CMS\MVC Controller\BaseController::display($cachable = false, $ur1params = Array) in m_phocadownload/controller on line 51

There are 4 more lines like this that I could supply if I could attach a file.

(This was working flawlessly until I upgraded my Joomla installation)

[Benno]

Hi,
which Joomla! version do you use?
which Phoca Download version do you use?
which PHP version do you use?

BTW: This is no error, this is a warning. (A message for the developer of the extension)

Kind regards,
Benno