Database connection fails sometimes

Hello,

yesterday I noticed that my site suddenly started malfunctioning. The site used to work normally.
I noticed that it does not have to do with javascript because it fails with simple php programs quering the database. The reload button takes forever and when stops it loads some or not at all of the content exiting with a fatal error:
Fatal error: Uncaught Error: Call to a member function bind_param() on boolean
or
Notice: Trying to get property ‘num_rows’ of non-object in

I tried performing a repair from control panel but in vain.
I say again it must not be my code because it used to work flawlessely.

My site is https://autohome2022.000webhostapp.com/

If there is anything I could try or you could do, I would appreciate it.
Thank you very much!!

Greetings,

I can indeed confirm that we had experienced a slight downtime on some of our MySQL nodes. The service is being restored progressively as we speak.