Why am I getting a 503 Service Temporarily Unavailable error?

Question

I have a new WordPress site (Ashe Pro theme) hosted on Lightsail (using the Lightsail load balancer).  Everything was working fine for a couple of months and then suddenly I received a "503 Service Temporarily Unavailable" Error.  It went away on its own after several days.  Now it's back again.  
  
I have no idea where to even start troubleshooting.  Is there documentation somewhere and troubleshooting steps?  Or can and get support from a human?  lol.  
  
Thank you.  
  
Edited by: JodyJ on Jun 25, 2021 9:47 AM  
  
Edited by: JodyJ on Jun 25, 2021 9:48 AM

Answer

Well, I answered my own question.  In my Dashboard, I found an event log that told me I had to manually restart lightsail because if was stopped by maintenance.  Once I did that my site was back up.

Why am I getting a 503 Service Temporarily Unavailable error?

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