Relay Compiler NOT including clientSchema.graphql extensions

I have setup the following `clientSchema.graphql` for my application but it seems to throw an error when I run `relay-compiler --src ./app --schema ./app/schema.graphql`:

```
extend type JournalEntry {
local_attachment_path: String
}

extend type Journal {
local_attachment_path: String
}
```

Then when I run the compile command, I get:

```
Encountered 5 errors:
- GraphQLError: Unknown field 'local_attachment_path' on type 'Journal'.
- GraphQLError: Unknown field 'local_attachment_path' on type 'JournalEntry'.
- GraphQLError: Unknown field 'local_attachment_path' on type 'JournalEntry'.
- GraphQLError: Unknown field 'local_attachment_path' on type 'Journal'.
- GraphQLError: Unknown field 'local_attachment_path' on type 'Journal'.
```

Below is my relay environment version:

```
"react-relay": "^10.1.0",
"relay-hooks": "^3.7.0",
"relay-runtime": "^10.1.0",
"babel-plugin-relay": "^10.1.0",
"relay-compiler": "^10.1.0",
"relay-hooks": "^3.7.0",
```