Conflict with EXT:event_news from Georg Ringer

[angeloprevitali]

Hello

we installed the actual EXT:event_news version 2.1.0 from Georg Ringer with EXT:news version 6.3.0 on a LINUX Server with PHP 7.1 and TYPO3 CMS version 8.7.12.

If you now want to add a new item into a new sys_folder with the EXT:dated_news version 5.1.1 by adding a new item there is the following error coming:

Fatal error: Cannot redeclare GeorgRinger\News\Domain\Model\News::getEventEnd() in /home/httpd/vhosts/netconsult.ch/demo2.edorf.ch/typo3temp/var/Cache/Code/news/tx_news_domain_model_news.php on line 2858

Is this a error coming from the EXT:news AND/OR is that a error from the EXT:dated_news that interferences with the extension news?

Can you help us out?

Thanks for your quick feedback.

Best regards,
Angelo