الي عنده مشكله بالبلاك بورد
ويطلع عندها

Connection Error:
There was a problem connecting to the primary media file on the streaming server. Either the file does not exist or the streaming server is currently not responding.

الحل انه تنزل المحاضره بــ اللاب

وتشغله

وان شالله راح يشتغل