Issue Unable to access Plesk admin dashboard

[DigitalSplendid]

Hosted on AWS EC2. Plan is t3.micro. Unable to access Plesk dashboard since yesterday. Getting the message:

"Server Error

500 Plesk\Exception\Database​

DB query failed: SQLSTATE[HY000] [2002] No such file or directory

Type	Plesk\Exception\Database
Message	DB query failed: SQLSTATE[HY000] [2002] No such file or directory
File	Mysql.php
Line	64

You may be able to resolve the issue automatically using Repair Kit."



If you are the server administrator, try resolving the issue using our troubleshooting tool, Repair Kit.
Open Repair Kit
You will be asked to enter the Plesk administrator password."

Tried Repair Kit but forms remain static after filling username and password.

 

[IgorG]

Mysql service is not running.
There are a lot of KB articles about this issue Search results – Plesk Help Center

 

[DigitalSplendid]

@IgorG

Thanks for the reply.

I have upgraded EC2 instance to t3a.medium. This should have addressed the memory space deficiency problem. But status quo prevails. Any suggestion what to do next?

 

[WebHostingAce]

Have you restarted after this upgrade?