MySQL DATABASE issue SQLSTATE[HY000] [2002] No route to host

My website URL is: www.odmcs.in

What I’m seeing is: SQLSTATE[HY000] [2002] No route to host

I’m using this software:

Additional information:

I see no databases in mysql database list. But there were 2 databases created. I guess, it is been 5 to 8 hrs that the problem started. Is it due to server side maintenance?

(btw, i am using free hosting)

Screenshot:

same problem come with me from last night. if you get any resolution please tell me too.

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Same here