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Fatal error: Uncaught TypeError: count(): Argument #1 ($value) must be of type Countable|array, null given in /home/clients/e87c6a49db5de6ff81e29acb1f620207/web/conferences/fresh12/framework/talk.php:47 Stack trace: #0 /home/clients/e87c6a49db5de6ff81e29acb1f620207/web/conferences/fresh12/framework/talk.php(40): Talk->loadSlidesFromXml(Object(SimpleXMLElement), '24') #1 /home/clients/e87c6a49db5de6ff81e29acb1f620207/web/conferences/fresh12/framework/talk.php(21): Talk->LoadFromXml(Object(SimpleXMLElement), '24') #2 /home/clients/e87c6a49db5de6ff81e29acb1f620207/web/conferences/fresh12/framework/conference.php(21): Talk->__construct(Object(SimpleXMLElement), '24') #3 /home/clients/e87c6a49db5de6ff81e29acb1f620207/web/conferences/fresh12/framework/framework.php(24): Conference->GetTalkById('24') #4 /home/clients/e87c6a49db5de6ff81e29acb1f620207/web/conferences/fresh12/index.php(7): include_once('/home/clients/e...') #5 {main} thrown in /home/clients/e87c6a49db5de6ff81e29acb1f620207/web/conferences/fresh12/framework/talk.php on line 47