My database has crashed (Postgres) and is not able to recover.

See the screenshot for the logs. Luckily this is staging environment but want to get this back asap. Also want to know what caused this crash and how this can be recovered without contact support team? Considering in the mind if the products are in produciton and this happens.

Project Id: 2b1c75d6-f9ed-4b12-af24-aebea723b858

EnvironmentId: 9235fc18-77ef-44f2-bc73-052a6042d483