Exception at Http2CallStream.<anonymous>(@grpc.grpc-js.build.src:client)

### Problem description
Getting lots of errors like this:

`Error at Http2CallStream. (/usr/src/app/node_modules/@grpc/grpc-js/build/src/client.js:96:45) at Http2CallStream.emit (events.js:205:15) at Http2CallStream.EventEmitter.emit (domain.js:471:20) at /usr/src/app/node_modules/@grpc/grpc-js/build/src/call-stream.js:71:22 at processTicksAndRejections (internal/process/task_queues.js:82:9) { code: 14, details: '', metadata: Metadata { options: undefined, internalRepr: Map {} } }`

Exception:

```
Error: null
File "/usr/src/app/node_modules/@grpc/grpc-js/build/src/client.js", line 96, col 45, in Http2CallStream.
const error = Object.assign(new Error(status.details), status);
File "events.js", line 205, col 15, in Http2CallStream.emit
File "domain.js", line 471, col 20, in Http2CallStream.EventEmitter.emit
File "/usr/src/app/node_modules/@grpc/grpc-js/build/src/call-stream.js", line 71, col 22, in null.
this.emit('status', status);
File "internal/process/task_queues.js", line 82, col 9, in processTicksAndRejections
```
What does this means?

### Reproduction steps
This begins happens when I updated `firebase-admin` to `8.4.0` and `googleapis` to `42.0.0`

### Environment
- OS name, version and architecture: Docker running on 64bit Amazon Linux/2.12.16
- Node version: 12.9.1
- Node installation method: ` node@latest` Docker container.
- Package name and version: @grpc/grpc-js@0.5.2