PHP7 - PHP Error - tx_caretaker_pi_singleview

[ingeniumdesign]

Hi, the caretaker server "singleview" dont work under php 7.x / TYPO3 7.6.xx

can u fix it ?

#1: PHP Warning: Declaration of tx_caretaker_pi_singleview::getNodeChart($node) should be compatible with tx_caretaker_pibase::getNodeChart() in /typo3conf/ext/caretaker/pi_singleview/class.tx_caretaker_pi_singleview.php line 40

class tx_caretaker_pi_singleview extends tx_caretaker_pibase {

thanks!