Error establishing a database connection

The server returned HTTP 500 (Internal Server Error) while trying to reach the database.

What happened?

The application failed to open a connection to its primary database within the configured timeout. This can occur when the DB host is unreachable, credentials are invalid, or the pool has exhausted connections.

Correlation ID

DB-ERR-9F2A3C

Timestamp

2025-10-12T11:38:15-05:00

Environment

production

What can I do?

Retry: transient issues may clear quickly.
If you are the site owner, check your database host, user/password, and that the DB server is reachable from the app network.
Verify that the max_connections / pool size is adequate and that long-running queries are not blocking.
Inspect recent deploys or infrastructure changes (firewall rules, security groups, SSL requirements).
Contact support and include the correlation ID above so we can trace the request.

Technical details

DB Host

db-primary.internal:3306

DB User

app_user

SSL

required

Driver

mysqli

Exception

mysqli_sql_exception: SQLSTATE[HY000] [2002] Connection timed out
  at Database.connect (src/db/Connection.php:42)
  at Pool.acquire (src/db/Pool.php:88)
  at CompanyRepository->findById (src/repo/CompanyRepository.php:61)
  at CompaniesController->show (src/http/CompaniesController.php:39)
  at HttpKernel->handle (src/http/Kernel.php:127)

Last 3 connection attempts

[11:38:11] try #1 → db-primary.internal:3306 → timeout (2s)
[11:38:13] try #2 → db-primary.internal:3306 → timeout (2s)
[11:38:15] try #3 → db-primary.internal:3306 → timeout (2s)

If this persists, please contact support and include DB-ERR-9F2A3C.

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