Accessing youtubomatic items panel

Hi: I hope the day finds you well. When trying to access the YouTube to Posts items panel I keep getting the following message: This page isn't working.  tvvideonews.com is currently unable to handle this request. HTTP ERROR 500.  Although I haven't been able to access the panel for a couple of days, new items are still posting on my website.  Thanks in advance for your help with this matter. Happy New Year!