Start with quick checks: confirm your database details and check for a host...

https://trentonsexcellentthoughtss.evergrovio.com/posts/how-do-i-prepare-a-timeline-of-events-for-my-criminal-lawyer

Start with quick checks: confirm your database details and check for a host outage. If the error remains, try deeper fixes, including database repair and configuration checks. Contact hosting support if the server is down or you cannot access it.