Meltano

hi everyone, I am trying to use this extractor <https://hub.meltano.com/extractors/tap-mongodb--transferwise/>
These are the steps i followed
1. `meltano add extractor tap-mongodb`
2. `meltano config tap-mongodb set --interactive`  (added all the required settings)
after that I ran `meltano config tap-mongodb test` and got this error
```tap_mongodb.errors.InvalidReplicationMethodException: Invalid replication method None! replication method needs to be either FULL_TABLE or INCREMENTAL```
I tried adding `replication-method` to extractor in meltano.yml file:
```# just showing part of the meltano.yml file
extractors:
- name: tap-mongodb
  select:
    - '*.*'
  metadata:
    replication-method: LOG_BASED```
still got the error!
Where should I add the replication-method?
Thanks!

found a way to add the replication-method
<https://docs.meltano.com/getting-started/#choose-how-to-replicate-each-entity>

But even the command mentioned in the documentation is giving me the error!

```Plugin configuration is invalid
TypeError: 'NoneType' object is not subscriptable```

got the error after running
```meltano config tap-mongodb set _metadata '*' replication-method LOG_BASED
meltano config tap-mongodb test```