play a video on the JS frontpage with hit the triangel is ok, but whe i use the link "video" in (user added a video) i become a failure message "Warnung

Invalid video ID provided".
and is add "?Itemid=108" to the url, that its look "url/component/community/videos?Itemid=108"
i dont know why and how to solve this
Url: www.freakteam.de
joomla: 3.7.2
JomSocial: 4.3.4
Socialize 2.1.4
CCK: K2 v2.7.1 (...play a video on the JS frontpage with hit the triangel is ok, but whe i use the link "video" in (user added a video) i become a failure message "Warnung

Invalid video ID provided".
and is add "?Itemid=108" to the url, that its look "url/component/community/videos?Itemid=108"
i dont know why and how to solve this
Url: www.freakteam.de
joomla: 3.7.2
JomSocial: 4.3.4
Socialize 2.1.4
CCK: K2 v2.7.1 ( i try yesterday a override for this from the Template JA Social II, but can't realy customize it)

i have no programming skill, not in php not in css or other
i need many help but my english is not very better than my php/css
i hope i find nice people they can help me with inspiration, knowledge, suggestion one or the other tip

many thanks
Marcel Show more