# InvalidGrpcPackageDefinitionMutexException

**Kind:** Class

**Source:** [`packages/microservices/errors/invalid-grpc-package-definition-mutex.exception.ts`](https://github.com/nestjs/nest/blob/master/packages/microservices/errors/invalid-grpc-package-definition-mutex.exception.ts#L3)

**Part of:** [Microservices](subsystem-packages-microservices)

**Extends:** `RuntimeException`

## Relationships

- IMPORTS → `RuntimeException`