Error Connecting Database While Linking YouTube Video

Hello. I am building a new video gallery using primarily YouTube links. Every time I add a link, the main screen will have the message “Error connecting database” in the Image box. It will fluctuate briefly, then correct itself and I can save the video properly, with the thumbnail and link complete. It normally takes about 60 seconds for it to respond and lock in correctly. I have built other galleries before and not had this problem. Can anyone recommend a fix for this?

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