question: Error: Cannot get connection "default" from the connection manager.

[matheusriios]

Error: Cannot get connection "default" from the connection manager. Make sure you have created such connection. Also make sure you have called useContainer(Container) in your application before you established a connection and importing any entity.
    at Object.value (/src/decorators/InjectConnection.ts:12:23)
    at /app/src/ContainerInstance.ts:355:37
    at Array.map (<anonymous>)
    at ContainerInstance.initializeParams (/app/src/ContainerInstance.ts:352:27)
    at ContainerInstance.getServiceValue (/app/src/ContainerInstance.ts:305:47)
    at ContainerInstance.get (/app/src/ContainerInstance.ts:119:21)
    at Object.value (/app/src/decorators/Inject.ts:48:42)
    at /app/src/ContainerInstance.ts:355:37
    at Array.map (<anonymous>)
    at ContainerInstance.initializeParams (/app/src/ContainerInstance.ts:352:27)
[nodemon] app crashed - waiting for file changes before starting...

My index.ts

import 'reflect-metadata';

import { Container } from 'typedi';
import { useContainer } from 'typeorm';
import Application from 'src/Application';

useContainer(Container);

const application = Container.get(Application);

application.start();

[stevenhansel]

Same issue, the error only show up when I'm executing a GraphQL query/mutation from a resolver but there was no error on build/compilation time.

I solved the problem temporarily by changing my TypeORM connection name to default. It seems that useConnection is defaulted to check with the connection name of default.

[NoNameProvided]

The error says it, you attempt to access the connection before you create in TypeORM via calling createConnection. Closing this issue as solved. If your issue still persists please open a new issue with a minimal, reproducible example.

[github-actions[bot]]

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