Mariadb service is not running. Can't connect to MySQL server

ERPNext
,
1

When I visit my site http://hecasys.erpnextasia.com/ . I got this error:

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Then I try to migrate my site this command: bench migrate. I get this warning:

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How to solve this…

Note: This site is already in production. I got the same error from all of my sites that are on this bench.

Thanks
Samsul

2

I got the solution. My MariaDB status failed. I ran service mariadb restart and solve this problem.